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Questions about GIGABYTE products => Motherboards with Intel processors => Topic started by: arbrog on December 01, 2015, 12:34:25 am

Title: GA-Z170X-Gaming 7 Error Code 55 Memory Initialization Error
Post by: arbrog on December 01, 2015, 12:34:25 am
I recently upgraded my motherboard, RAM, CPU and CPU cooler.  My new specs are as follows:
When I turn on the computer the motherboard starts booting and everything turns on and gets power but then I get an error code 55 on the mobo and it shuts off and restarts a few seconds later.  Error 55 is a Memory Initialization Error so i tried re-arranging the RAM in every combination and even tried without but got the error every time.  I also re-seated the cpu and made sure none of the pins were bent. I am thinking it is not a memory issue but rather a motherboard issue.  Any thoughts/ideas on how to fix it?
Title: Re: GA-Z170X-Gaming 7 Error Code 55 Memory Initialization Error
Post by: dmdilks on December 01, 2015, 01:42:48 am
The memory controller is in the CPU. So have you check the CPU socket to make sure you don't have any bent pins. Because by what you saying it doesn't matter if you have the memory in or none, you get the same code. Have you tried one stick at a time?
Title: Re: GA-Z170X-Gaming 7 Error Code 55 Memory Initialization Error
Post by: arbrog on December 01, 2015, 03:01:14 am
Yeah I checked for bent pins and did not see any.  I also tried only a single stick and that also gave the same result.
Title: Re: GA-Z170X-Gaming 7 Error Code 55 Memory Initialization Error
Post by: berte on December 01, 2015, 09:53:00 am
Hi, what's your mem slot ?
I've same problem with slot 1 and slot 3 dual channel mode.  Can you try mem slot 2 and 4?
Title: Re: GA-Z170X-Gaming 7 Error Code 55 Memory Initialization Error
Post by: arbrog on December 02, 2015, 07:04:17 pm
I tried both no luck :(
Title: Re: GA-Z170X-Gaming 7 Error Code 55 Memory Initialization Error
Post by: berte on December 02, 2015, 08:35:56 pm
what about one slot only, such as slot 4?
Title: Re: GA-Z170X-Gaming 7 Error Code 55 Memory Initialization Error
Post by: arbrog on December 03, 2015, 02:11:44 am
Thanks but tried it no luck. I think im going to send the mobo back.  The fact that it does this even when no memory is in leads me to believe it is  a mobo issue
Title: Re: GA-Z170X-Gaming 7 Error Code 55 Memory Initialization Error
Post by: murray on December 06, 2015, 01:41:34 am
I'd bet what happened to you is the same thing that happened to me. I've got a very similar motherboard and I kept getting the same error code 55. This is what I built:

GA-Z170X-Gaming 5 (Rev 1.0)
i5-6600k
2x8gb Crucial Ballistix Sport DDR4 2400
EVGA 1050W PSU

I was able to test those RAM modules in a server and they worked, so it was not an issue with the modules. My guess was on the 2133mhz socket and the 2400mhz modules (which are in the compatible RAM list, but anyway).

And I was right. I got another memory kit 2x4gb G.Skill RipJaws IV DDR4 2133

I specifically wanted to try with the smallest & slowest RAM to maximize compatibility, so I went for those.

I put a single 4gb G.Skill RipJaws IV DDR4 2133, and BINGO! it worked. I got into the Bios setup, Bios version was F2.

I tried 2x4gb G.Skill RipJaws IV DDR4 2133, it worked.
I changed the RAM frequency multiplier from "Auto" to "21.33" which fix the memory speed to 2133mhz, then removed the Gs.Skill modules and tried with 8gb Crucial Ballistix Sport DDR4 2400, IT WORKED! Also two of those worked together.

Went back to the bios, the bios was reading those modules as 2400mhz (and it even recognized that they had an XMP profile) but forced to run at 2133mhz by my previous configuration. Tried to switch back to auto > Code 55 AGAIN! (with the XMP profile switched off & with the XMP profile switched on).

Back to G.Skill, back to fixed 2133 speed, back to the Crucials, it worked again. So far as long as I didn't reset the CMOS, it was working.

I tried running all four modules at the same time, it worked. In order to do that, at least in "Auto" speed setting, the G.Skill 2133 had to be in DIMM1 (red), then another G.Skill 2133 in the other red socket and the two Crucial 2400 in the black sockets.

Then I updated the bios to the latest version F4. Nothing changed, all tests produced the same results as before.

Right now I'm running all four modules with a total of 24GB and they are running at 2133mhz. The only way I managed to run the Crucial 2400 modules is by forcing the bios to run the memory at 2133, either by fixing the memory speed or by putting the 2133 module in the first slot.

However, in order to get this system working, I see no way of doing it without buying 2133mhz DDR4 as I did or at least borrowing from someone else. They problem is that if you don't keep that 2133mhz ram, as soon as you clear CMOS, your system won't start anymore (because it will go back to the default "auto" speed for RAM").

I'll contact tech support to make them aware of this issue so they can release a new Bios version to fix this.
Title: Re: GA-Z170X-Gaming 7 Error Code 55 Memory Initialization Error
Post by: arbrog on December 06, 2015, 06:34:52 pm
Wow thank you this makes a lot of sense.  I thought about how the clock could be an issue but on Newegg, where i bought it from, it says:DDR4 3866*(*O.C)/ 3733*/ 3666*/ 3600*/ 3466*/ 3400*/ 3333*/ 3300*/ 3200*/ 3000*/ 2800*/ 2666*/ 2400*/ 2133.  So i guess you need to get into the bios with a non overclocked speed, only 2133 and then you can boost them.  That is a huge issue and I dont really want to buy more RAM but who knows how long it will take to fix this.  My RAM also says compatible with the Z170 which makes me even more mad.  Do you get an error 55 even if you dont put any RAM in?
Title: Re: GA-Z170X-Gaming 7 Error Code 55 Memory Initialization Error
Post by: dmdilks on December 06, 2015, 08:13:27 pm
Wow thank you this makes a lot of sense.  I thought about how the clock could be an issue but on Newegg, where i bought it from, it says:DDR4 3866*(*O.C)/ 3733*/ 3666*/ 3600*/ 3466*/ 3400*/ 3333*/ 3300*/ 3200*/ 3000*/ 2800*/ 2666*/ 2400*/ 2133.  So i guess you need to get into the bios with a non overclocked speed, only 2133 and then you can boost them.  That is a huge issue and I dont really want to buy more RAM but who knows how long it will take to fix this.  My RAM also says compatible with the Z170 which makes me even more mad.  Do you get an error 55 even if you dont put any RAM in?

This is a mistake about 80% of the people make. Yes it says you can run that memory. But you will have to really by theory OC the memory. That is why they put behind the clock speed a * or oc. It has been like this for years.

Most people think WOW I can run 3000 memory on the board. Yes you should be able to drop in 2400 to 3866 and it should run by default run at 2133. Like I said the memory controller is in the CPU. So is it the CPU or the board? 

The problem that the people are having with this series board is really bad. They are having problems with almost everything on the board.
Title: Re: GA-Z170X-Gaming 7 Error Code 55 Memory Initialization Error
Post by: murray on December 07, 2015, 06:03:03 pm
My RAM also says compatible with the Z170 which makes me even more mad.  Do you get an error 55 even if you dont put any RAM in?

My RAM is listed as compatible both on the Crucial website and Gigabyte's list of compatible RAM. Yet the issue is still there.

If I don't put any RAM in I do get error 55, but it reaches the error 55 much more quickly. I'd say it takes 3 seconds without any RAM and 6-7 seconds with 2400mhz RAM to reach error 55.

When there's at least a single module in, the systems checks more things, since it displays more codes before reaching error 55.
Title: Re: GA-Z170X-Gaming 7 Error Code 55 Memory Initialization Error
Post by: mcmillions on December 09, 2015, 09:56:58 pm
I'm also having the exact same issue. I have the Crucial Technology 16GB (2x8GB) Kit Ballistix Sport Memory - DDR4, CL16, PC4-19200, 2400MT/s. When using memory slots 4, 3 I get error code 55. When using 2, 1 I get error code 55. Although, when using memory slots 2,3 it'll post just fine. I'm also using the latest beta bios, w/o issue. Although, randomly I'll get a complete system lock up and will have to forcefully reboot the system. The BIOS seems incredibly buggy. One thing I'm going to try when I have time is to flip the dual BIOS to the backup, and try the same slots. It would be nice to be able to use the dual channel capability, but it seems broken. I'm also within my 30 days return window from the sstore, so I may just exchange. Having incredible difficulty determining if it's the BIOS bugging out or if it's a true hardware failure.

Thoughts?
Title: Re: GA-Z170X-Gaming 7 Error Code 55 Memory Initialization Error
Post by: dmdilks on December 09, 2015, 10:27:12 pm
The memory controller is in the CPU. So some where between the CPU & memory you are not getting a connection. Because if you take the memory out I think you will get the same error.

So I would look at the memory slots and pins in the CPU socket. If everything is OK than it is time to return it or RMA it. A bios update more likely will not fix,
Title: Re: GA-Z170X-Gaming 7 Error Code 55 Memory Initialization Error
Post by: murray on December 10, 2015, 11:10:19 am
First answer from Gigabyte support was really disappointing. They claimed my issue is due to the i5-6600K not supporting DDR4 over 2133mhz and that I was trying to run "overclocked RAM". I reopened the ticket explaining that the i7-6700K has the same information regarding memory support and that Gigabyte lists DDR4 up to 3000mhz as compatible with this motherboard.

It should at the very least work at 2133mhz on auto, otherwise it's an issue with their motherboard.

This is a mistake about 80% of the people make. Yes it says you can run that memory. But you will have to really by theory OC the memory. That is why they put behind the clock speed a * or oc. It has been like this for years.

Most people think WOW I can run 3000 memory on the board. Yes you should be able to drop in 2400 to 3866 and it should run by default run at 2133. Like I said the memory controller is in the CPU. So is it the CPU or the board? 

The problem that the people are having with this series board is really bad. They are having problems with almost everything on the board.
Title: Re: GA-Z170X-Gaming 7 Error Code 55 Memory Initialization Error
Post by: dmdilks on December 10, 2015, 01:15:25 pm
First answer from Gigabyte support was really disappointing.

Under stand something is about 80% of the people that are tech support are there mostly to just answer the phone. I have talk to their tech support one time. That was many years ago. I don't deal with them. If I have a problem like this I will return or RMA the board.

Quote
They claimed my issue is due to the i5-6600K not supporting DDR4 over 2133mhz
 

This is in a way is true. By the spec's of the i5 & i7 it really only supports 1866/2133. That is without Over Clock. Yes I under stand 2400 to 3866 should run by default at 2133.

Quote
By the OP - "RAM in every combination and even tried without but got the error every time".

But the people that are getting the error 55 is that the board or the CPU isn't seeing the memory. So all the combination you try. If there is some thing screwed up between the memory slots and the CPU. It isn't going to work.

They most have had a batch of boards that are bad. Because the OP said he even tried it without memory and got the same error. That is telling me you are not getting a good connection in the memory slots.


Title: Re: GA-Z170X-Gaming 7 Error Code 55 Memory Initialization Error
Post by: arbrog on December 10, 2015, 02:43:54 pm
Yeah I do get the error when there was no RAM installed so I thought it must be the board and sent it back.  I also plan on returning my 3000 clock RAM for 2133 RAM just to be safe. 
Title: Re: GA-Z170X-Gaming 7 Error Code 55 Memory Initialization Error
Post by: larry609 on December 22, 2015, 11:46:21 pm
Arbog,

  You are the MAN (or WOMAN)!!!!!  I've been trying for 2 days to get Win10 installed on my Gaming 7 - and always had the screen get corrupted and then WIndows could not recover and I had to reinstall.

I just lowered my Ballistix Sport (2400) to 2133 as you suggested - and it's stable as a rock!

If you're ever in Houston, I will buy you dinner.  larry678@gmail.com

BTW - I've been building and selling PCs since 1983, and coding since 1967, so you did an old guy a good turn!  You rock, Dude!

PPS.  Battlefield 3 - ClayMoreNotLess is my username.

I'd bet what happened to you is the same thing that happened to me. I've got a very similar motherboard and I kept getting the same error code 55. This is what I built:

GA-Z170X-Gaming 5 (Rev 1.0)
i5-6600k
2x8gb Crucial Ballistix Sport DDR4 2400
EVGA 1050W PSU

I was able to test those RAM modules in a server and they worked, so it was not an issue with the modules. My guess was on the 2133mhz socket and the 2400mhz modules (which are in the compatible RAM list, but anyway).

And I was right. I got another memory kit 2x4gb G.Skill RipJaws IV DDR4 2133

I specifically wanted to try with the smallest & slowest RAM to maximize compatibility, so I went for those.

I put a single 4gb G.Skill RipJaws IV DDR4 2133, and BINGO! it worked. I got into the Bios setup, Bios version was F2.

I tried 2x4gb G.Skill RipJaws IV DDR4 2133, it worked.
I changed the RAM frequency multiplier from "Auto" to "21.33" which fix the memory speed to 2133mhz, then removed the Gs.Skill modules and tried with 8gb Crucial Ballistix Sport DDR4 2400, IT WORKED! Also two of those worked together.

Went back to the bios, the bios was reading those modules as 2400mhz (and it even recognized that they had an XMP profile) but forced to run at 2133mhz by my previous configuration. Tried to switch back to auto > Code 55 AGAIN! (with the XMP profile switched off & with the XMP profile switched on).

Back to G.Skill, back to fixed 2133 speed, back to the Crucials, it worked again. So far as long as I didn't reset the CMOS, it was working.

I tried running all four modules at the same time, it worked. In order to do that, at least in "Auto" speed setting, the G.Skill 2133 had to be in DIMM1 (red), then another G.Skill 2133 in the other red socket and the two Crucial 2400 in the black sockets.

Then I updated the bios to the latest version F4. Nothing changed, all tests produced the same results as before.

Right now I'm running all four modules with a total of 24GB and they are running at 2133mhz. The only way I managed to run the Crucial 2400 modules is by forcing the bios to run the memory at 2133, either by fixing the memory speed or by putting the 2133 module in the first slot.

However, in order to get this system working, I see no way of doing it without buying 2133mhz DDR4 as I did or at least borrowing from someone else. They problem is that if you don't keep that 2133mhz ram, as soon as you clear CMOS, your system won't start anymore (because it will go back to the default "auto" speed for RAM").

I'll contact tech support to make them aware of this issue so they can release a new Bios version to fix this.
Title: Re: GA-Z170X-Gaming 7 Error Code 55 Memory Initialization Error
Post by: gacek585 on December 23, 2015, 05:20:29 pm
Hi.
Same problem here. GA-z170x-UD3, Crucial 2x8gb 2400mhz F4 bios PC dont start, code 55. When i mixed memory in slots with G.skill system start and working well with total 24gb memory. 16gb crucial and 8gb g.skill.
I find today on other forum beta bios f5c , and now crucial working but only in slot 1-2 (single channel). When i put in slot 1-3 for dual channel , code 55. Now i try changed ram frequency from auto to 21.33 ant seee if dual chanell works.
Sry for my english :/

Edit:  Dual chanel works with frequency 21.33, 24.00 give post 55.
single chanel works with xmp profile 2400mhz. (of course on testing beta bios f5c)
Title: Re: GA-Z170X-Gaming 7 Error Code 55 Memory Initialization Error
Post by: arbrog on January 04, 2016, 10:34:12 pm
I have now tried new 2133 RAM which should 100% work with a brand new Z-170X and I still get a 55 error.  This means that it has to be the processor that is the issue as this is the only constant.
Title: Re: GA-Z170X-Gaming 7 Error Code 55 Memory Initialization Error
Post by: arbrog on January 04, 2016, 10:36:19 pm
Glad you got yours working!!

Arbog,

  You are the MAN (or WOMAN)!!!!!  I've been trying for 2 days to get Win10 installed on my Gaming 7 - and always had the screen get corrupted and then WIndows could not recover and I had to reinstall.

I just lowered my Ballistix Sport (2400) to 2133 as you suggested - and it's stable as a rock!

If you're ever in Houston, I will buy you dinner.  larry678@gmail.com

BTW - I've been building and selling PCs since 1983, and coding since 1967, so you did an old guy a good turn!  You rock, Dude!

PPS.  Battlefield 3 - ClayMoreNotLess is my username.

I'd bet what happened to you is the same thing that happened to me. I've got a very similar motherboard and I kept getting the same error code 55. This is what I built:

GA-Z170X-Gaming 5 (Rev 1.0)
i5-6600k
2x8gb Crucial Ballistix Sport DDR4 2400
EVGA 1050W PSU

I was able to test those RAM modules in a server and they worked, so it was not an issue with the modules. My guess was on the 2133mhz socket and the 2400mhz modules (which are in the compatible RAM list, but anyway).

And I was right. I got another memory kit 2x4gb G.Skill RipJaws IV DDR4 2133

I specifically wanted to try with the smallest & slowest RAM to maximize compatibility, so I went for those.

I put a single 4gb G.Skill RipJaws IV DDR4 2133, and BINGO! it worked. I got into the Bios setup, Bios version was F2.

I tried 2x4gb G.Skill RipJaws IV DDR4 2133, it worked.
I changed the RAM frequency multiplier from "Auto" to "21.33" which fix the memory speed to 2133mhz, then removed the Gs.Skill modules and tried with 8gb Crucial Ballistix Sport DDR4 2400, IT WORKED! Also two of those worked together.

Went back to the bios, the bios was reading those modules as 2400mhz (and it even recognized that they had an XMP profile) but forced to run at 2133mhz by my previous configuration. Tried to switch back to auto > Code 55 AGAIN! (with the XMP profile switched off & with the XMP profile switched on).

Back to G.Skill, back to fixed 2133 speed, back to the Crucials, it worked again. So far as long as I didn't reset the CMOS, it was working.

I tried running all four modules at the same time, it worked. In order to do that, at least in "Auto" speed setting, the G.Skill 2133 had to be in DIMM1 (red), then another G.Skill 2133 in the other red socket and the two Crucial 2400 in the black sockets.

Then I updated the bios to the latest version F4. Nothing changed, all tests produced the same results as before.

Right now I'm running all four modules with a total of 24GB and they are running at 2133mhz. The only way I managed to run the Crucial 2400 modules is by forcing the bios to run the memory at 2133, either by fixing the memory speed or by putting the 2133 module in the first slot.

However, in order to get this system working, I see no way of doing it without buying 2133mhz DDR4 as I did or at least borrowing from someone else. They problem is that if you don't keep that 2133mhz ram, as soon as you clear CMOS, your system won't start anymore (because it will go back to the default "auto" speed for RAM").

I'll contact tech support to make them aware of this issue so they can release a new Bios version to fix this.
Title: Re: GA-Z170X-Gaming 7 Error Code 55 Memory Initialization Error
Post by: berte on January 05, 2016, 08:20:44 am
I think, there is huge bug in bios sources.

Because some memory slot works as expected overclocked clock some of them not. In my case, slot 3 did not work with 2666 mhz in the other hand when I'd set 2133 mhz (manual setting) works as expected. So we should to wait robust bios version for overclocked memory modules.

Cheers


Title: Re: GA-Z170X-Gaming 7 Error Code 55 Memory Initialization Error
Post by: gacek585 on January 05, 2016, 10:39:59 am
I tested crucial memory on asrock z170 extreme4 , same problem. PC dont start in dual chanel mode (auto 2400mhz)
After changing on 2133 works fine.
Title: Re: GA-Z170X-Gaming 7 Error Code 55 Memory Initialization Error
Post by: gacek585 on January 21, 2016, 06:54:35 pm
In my case was the problem with these memories Crucial. Ram have been replaced with new ones and now run without any problems.
Guys try RMA your RAM.
Title: Re: GA-Z170X-Gaming 7 Error Code 55 Memory Initialization Error
Post by: Clif on February 04, 2016, 02:03:05 am
I am having  problems with two of these, here is Gigabytes response to my questions, they are effectively denying that there is anything wrong with these boards even though the internet is loaded with complaints/problems.
This was my first time purchasing this brand, 4 bad boards and and complete denial of any problems on the manufacturers side, this was my first and last time purchasing this brand.

 
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Question:   2 computers exact same set up, exact same problems, BIOS does not stick, constantly resets, Will not set correct memory speed, Fast boot does not work, USB's do not turn on, Transfer speeds between disks is only 5 bps, Constantly reboots, Will not recognize SSD's only spin ups, Will not reboot to OS, black screen only, have to do a hard shut down for 60 seconds or more to load, Fan adjusts do not work, USB 3.0/3.1 do not work, Rejects Video card graphics defaults to on board graphics, shuts off CPU fans. Drivers for Killer Network Manager BSOD both machines, specs for both computers:GA-Z170X-Gaming 7, Intel Core i7-6700K, G.Skill TridentZ DDR4 3400 16g, Samsung EVO 3D 1t SSD, Seagate 3t 7200, WD 1t 7200 x 3, GTX 980 Kingpin Classified, Zalman Reserator 3 Max Dual Water Cooler CPU, EVGA 1050G 80+ PSU, NO OVERCLOCKING everything is at default settings. All drivers are updated from manufacturers, All hardware works!! bought two ASUS MoBO's to make two new computers using same hardware. Both Gigabyte boards have been RMA and replacements have same problems, I am out over a $1000.00 because your products dont work, why dont they work? All across GOOGLE nearly everyone that bought these boards are having similar problems, others report bent or missing CPU pins, not to mention the manual that comes with the boards is of such low quality that its almost impossible to read and the pictures are nearly blacked out, your website offers no help/suggestion or anything only a beta bios 7 that is not complete only offers limited corrections.PLEASE STOP SELLING THESE UNTIL YOU FIX THEM.I almost bought the G1 models, glad I didn’t, would have been out twice as much money for boards that don’t work!   1/29/2016 1:02 PM
Answer:   
Dear Customer,

We're sorry to hear that.

It turns out that we do sell quite a lot of this particular board and haven't heard about any known issue, we understand that different people have different type of system configuration, therefore sometimes is hard to just judge the board.

According to Intel the memory controller (CPU) can only go up to 2133MHz by default, therefore there's no guarantee when trying to go beyond this frequency:

http://ark.intel.com/products/88195/Intel-Core-i7-6700K-Processor-8M-Cache-up-to-4_20-GHz

Please provide the previous RMA number so we can look into it.

Thank you.

2/4/2016 2:27 AM
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Product Info   
Product Name:   GA-Z170X-Gaming 7 (1.0)
BIOS Ver:   F6
Serial No:   160200003978
Purchase Dealer:   Newegg
Brand:   GIGABYTE
Model:   Intel Core i7-6700K
Operating System:   Win 10 64-bit
Size:   16g
Power Supply:   EVGA 1050G 80+
CPU Part No.:   6700K
Memory Part No.:   F4-3400C16D-16GTZ
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Title: Re: GA-Z170X-Gaming 7 Error Code 55 Memory Initialization Error
Post by: amdguru on February 21, 2016, 07:41:48 am
I'd bet what happened to you is the same thing that happened to me. I've got a very similar motherboard and I kept getting the same error code 55. This is what I built:

GA-Z170X-Gaming 5 (Rev 1.0)
i5-6600k
2x8gb Crucial Ballistix Sport DDR4 2400
EVGA 1050W PSU

I was able to test those RAM modules in a server and they worked, so it was not an issue with the modules. My guess was on the 2133mhz socket and the 2400mhz modules (which are in the compatible RAM list, but anyway).

And I was right. I got another memory kit 2x4gb G.Skill RipJaws IV DDR4 2133

I specifically wanted to try with the smallest & slowest RAM to maximize compatibility, so I went for those.

I put a single 4gb G.Skill RipJaws IV DDR4 2133, and BINGO! it worked. I got into the Bios setup, Bios version was F2.

I tried 2x4gb G.Skill RipJaws IV DDR4 2133, it worked.
I changed the RAM frequency multiplier from "Auto" to "21.33" which fix the memory speed to 2133mhz, then removed the Gs.Skill modules and tried with 8gb Crucial Ballistix Sport DDR4 2400, IT WORKED! Also two of those worked together.

Went back to the bios, the bios was reading those modules as 2400mhz (and it even recognized that they had an XMP profile) but forced to run at 2133mhz by my previous configuration. Tried to switch back to auto > Code 55 AGAIN! (with the XMP profile switched off & with the XMP profile switched on).

Back to G.Skill, back to fixed 2133 speed, back to the Crucials, it worked again. So far as long as I didn't reset the CMOS, it was working.

I tried running all four modules at the same time, it worked. In order to do that, at least in "Auto" speed setting, the G.Skill 2133 had to be in DIMM1 (red), then another G.Skill 2133 in the other red socket and the two Crucial 2400 in the black sockets.

Then I updated the bios to the latest version F4. Nothing changed, all tests produced the same results as before.

Right now I'm running all four modules with a total of 24GB and they are running at 2133mhz. The only way I managed to run the Crucial 2400 modules is by forcing the bios to run the memory at 2133, either by fixing the memory speed or by putting the 2133 module in the first slot.

However, in order to get this system working, I see no way of doing it without buying 2133mhz DDR4 as I did or at least borrowing from someone else. They problem is that if you don't keep that 2133mhz ram, as soon as you clear CMOS, your system won't start anymore (because it will go back to the default "auto" speed for RAM").

I'll contact tech support to make them aware of this issue so they can release a new Bios version to fix this.

Same thing happened to me.  My system:

Core i7 6700k
GIGABYTE Z170X Gaming 7
GIGABYTE R9 390 GPU
Samsung 950 PRO M.2 SSD (256GB)
Samsung 850 PRO 2.5" SSD (512GB)
Corsair Neutron Series XT SSD (480GB)
Seagate Constellation ES.3 "Enterprise Class" 4 TB HDD
Corsair 16GB Dominator Platinum PC4 24,000 @ 3,000 MT/s RAM
Corsair Obsidian Series 650D Case with USB 3.0 cable modification
Corsair AX860i Digital PSU with Individually Sleeved Type 3, Gen 2 DC cable kit - Blue
Corsair Hydro Series H105 AIO Cooler 
GIGABYTE Force K7 Keyboard
GIGABYTE 6980X Mouse
Windows 10 Pro

I will get some Dominator Platinum 2,133 modules to try on my system.  Thanks for the heads up about the problem.  HOWEVER, here's something weird.  When I put my system together for the first time, everything worked!  In fact, i was able to reboot the system multiple times with the 3,000 MT/s modules and it worked.  The only problem I was having was it didn't want to wake up from sleep mode.  Other then that, everything worked for about 2 weeks.  Then I received my Corsair DC cable kit and Dominator Platinum Light Bar Upgrade kit for the modules.  Since changing those, my system hasn't ran longer than 5 seconds.  I changed the motherboard, CPU, GPU, CPU AIO cooler and RAM!!!!  Nothing has worked, so it must be the 2,133 issue you talked about. 
Title: Re: GA-Z170X-Gaming 7 Error Code 55 Memory Initialization Error
Post by: mcmillions on February 27, 2016, 11:31:40 pm
Alright, I finally found a fix. This at least worked for me.

This is for the DD4 2400 Crucial Ballastix Sport memory.

1.) Put both modules in slots 3 & 4 - booted at 2400hz, changed it back to 2133 so that I could boot into dual channel.
2.) Put both modules into slots 1 & 3 and booted into dual channel at 2133
3.) Went back into the BIOS and set my RAM voltage clock up to 1.266 and tried at 1.30 as well.
4.) Booted into Windows w/ dual channel XMP profile set at 2400hz without issue, no error 55.

Let me know if this works for you folks. It seems like the RAM clock and the default voltage settings on the board just didn't support out of the box for faster speeds than 2133. It's almost as if it isn't automatically setting.
Title: Re: GA-Z170X-Gaming 7 Error Code 55 Memory Initialization Error
Post by: dfiser on March 24, 2016, 01:01:07 am
Alright, I finally found a fix. This at least worked for me.

This is for the DD4 2400 Crucial Ballastix Sport memory.

1.) Put both modules in slots 3 & 4 - booted at 2400hz, changed it back to 2133 so that I could boot into dual channel.
2.) Put both modules into slots 1 & 3 and booted into dual channel at 2133
3.) Went back into the BIOS and set my RAM voltage clock up to 1.266 and tried at 1.30 as well.
4.) Booted into Windows w/ dual channel XMP profile set at 2400hz without issue, no error 55.

Let me know if this works for you folks. It seems like the RAM clock and the default voltage settings on the board just didn't support out of the box for faster speeds than 2133. It's almost as if it isn't automatically setting.

I am now having this problem, just received all the parts today.

Gigabyte Z170x, Crucial Balllistix 8GB 2400, Skylake 6700K

Computer won't boot, getting error 55.

To achieve step one of your solution, you have to get into bios, right? How did you get the PC to initially boot at the default memory speed of 2400?

edit: did you put 2133 speed memory in the PC to get it to boot initially? or is it possible with just the 2400? i tried slots 3 & 4.
Title: Re: GA-Z170X-Gaming 7 Error Code 55 Memory Initialization Error
Post by: tank1916 on April 21, 2016, 04:18:28 am
Hey guys, this thread is a little old but for anyone else that still has this problem, I also ran into it and when I figured out the solution I had to face palm myself.

The G7 only has one release tab on each memory slot. When I installed the memory I would put the bottom end in first then put pressure on the top half(closest to the release tab) until I heard the "click". What was happening is that the bottom end was lifting ever so slightly due to the force on the top half, enough to throw error 55 my way. Once I noticed this and pressed firmly on the bottoms of the sticks it POST'ed without a problem.

Hope this helps out anyone else with the same issue
Title: Re: GA-Z170X-Gaming 7 Error Code 55 Memory Initialization Error
Post by: sigbjorn.helset on April 25, 2016, 09:28:44 pm
Hi,

Just to other that might have the same trouble.

I also got error code 55 as well. - with memory on the support list:  Crucial 32 GB 4x8 2666.

After reading these posts, I tried with just one memory strip, subsequently in positions 1-2-3-4.

It started working on position 3 and 4!

I flashed bios up to latest F8d, and retried position 1 and 2
-  but with no luck, error 55 regardless combination.

To me this looks very much like a mb problem,
- but I will even try to re-fit the CPU once more
before returning the mb.


Title: Re: GA-Z170X-Gaming 7 Error Code 55 Memory Initialization Error
Post by: eborman on August 04, 2016, 05:41:37 pm
Hi. I just bought a GA-Z170X Gaming 7 (EU) and got the same error code 55 as others posters.  For me, it was the same simple problem as Tank1916 reported.  The RAM had lifted ever so slightly from the fixed end of the RAM slots when I pressed down on the release tab end of the boards. I pressed down firmly on both ends at the same time and problem solved.  I had checked the RAM twice and hadn't noticed this slight rise - was pulling my hair out until I read Tank1916's post.  Thanks.
Title: Re: GA-Z170X-Gaming 7 Error Code 55 Memory Initialization Error
Post by: jojoro on August 09, 2016, 06:06:03 pm
I had the same problem with Gaming 7 Motherboard +G.Skill RipJaws V 3000  Memory. (Error 55 at boot)
Solution is simple - Change settings "Memory boot mode" to "Fastboot off" in M.I.T. After reboot system perform a very long test of memory modules and apply correct values to frequency and voltage.
After this you can change settings to auto. With settings "Fastboot always on" after cold reboot UEFI gets bad memory setting again and error 55 occurs.
Title: Re: GA-Z170X-Gaming 7 Error Code 55 Memory Initialization Error
Post by: VanHalenII on November 03, 2016, 10:26:27 pm
Hey guys, this thread is a little old but for anyone else that still has this problem, I also ran into it and when I figured out the solution I had to face palm myself.

The G7 only has one release tab on each memory slot. When I installed the memory I would put the bottom end in first then put pressure on the top half(closest to the release tab) until I heard the "click". What was happening is that the bottom end was lifting ever so slightly due to the force on the top half, enough to throw error 55 my way. Once I noticed this and pressed firmly on the bottoms of the sticks it POST'ed without a problem.

Hope this helps out anyone else with the same issue
Yes it did. Same MB same issue, was going to return it and then saw this and now it is booting in to the BIOS.
Thanks
Title: Re: GA-Z170X-Gaming 7 Error Code 55 Memory Initialization Error
Post by: andy9l on November 20, 2016, 11:39:52 am
Hi all,

I've recently bought a new GA-Z170X Gaming 7 (rev 1.0) board and am now looking to buy the RAM for my build. Searching online, I've come across a whole load of Error 55 issues with this board (including this topic) and I'm now having second thoughts.

Reading through this thread, there doesn't appear to be any single solution to the issue. Is there any particular RAM that has repeatedly worked with this board?

I've read that even the RAM mentioned in the Memory Support List (http://www.gigabyte.com/products/product-page.aspx?pid=5481#memory%20support%20list) do not work if they're not native 2133 MHz sticks - is this the case?

I don't need overclocked RAM, so am I best to go with 2133 MHz?

It otherwise seems like a solid, well-designed board, so I don't particularly want to return it. That said, RAM issues is an obvious show-stopper.

Thanks in advance.
Title: Re: GA-Z170X-Gaming 7 Error Code 55 Memory Initialization Error
Post by: shadowsports on November 20, 2016, 03:16:46 pm
Corsair Vengeance LPX.  16GB /2133 about $78 NewEgg
Title: Re: GA-Z170X-Gaming 7 Error Code 55 Memory Initialization Error
Post by: andy9l on November 20, 2016, 06:21:39 pm
Corsair Vengeance LPX.  16GB /2133 about $78 NewEgg

Thanks for the reply.

Unfortunately I'm in the UK so it's more £££ than $80, but if it works I'm willing to pay!

Weirdly, 3000MHz RAM in the UK is often cheaper than 2133MHz of the same brand - presumably supply/demand. Would it be a safer option for me to go for the 2133MHz regardless?
Title: Re: GA-Z170X-Gaming 7 Error Code 55 Memory Initialization Error
Post by: shadowsports on November 21, 2016, 04:07:53 am
Most running the LPX are 2400~3000 stable.  Haven't seen anyone at 2666.  One guy got 2800. 

Another x99 user who got 3100 (different than you obviously), but chipset is finicky about RAM just the same. 

As long as you have a K series CPU I think you'll be fine.
Title: Re: GA-Z170X-Gaming 7 Error Code 55 Memory Initialization Error
Post by: andy9l on November 21, 2016, 09:18:45 am
Most running the LPX are 2400~3000 stable.  Haven't seen anyone at 2666.  One guy got 2800. 

Another x99 user who got 3100 (different than you obviously), but chipset is finicky about RAM just the same. 

As long as you have a K series CPU I think you'll be fine.

Thanks for the response.

I'm more than happy to run 2400/3000 MHz rated sticks at 2133 since I know it makes no discernible difference for my use cases.

I've just read so many issues with buying RAM for this motherboard I'm being over cautious.

The only RAM I can find with a part number that perfectly matches one on the official memory support list for the board is this set from G.Skill:

https://www.amazon.co.uk/dp/B013J7T5K6

But even then the board doesn't support 4 of them (for future).

All the Corsair RAM part numbers differ by one or two letters/numbers. For example this 16GB Corsair LPX set (https://www.amazon.co.uk/dp/B0123ZC250) is: CMK16GX4M2A2400C14, which does not appear on the supported memory list. But CMK16GX4M4A2400C14 does. That number refers to the number of modules in a given set - almost as though the board doesn't really support 8GB modules?!

To cut this short, I need to decide between the following:

1. Corsair 2x8GB LPX 2400MHz - https://www.amazon.co.uk/dp/B0123ZC250
2. Corsair 2x8GB LPX 2133MHz - https://www.amazon.co.uk/dp/B0123ZCAKW
3. G.Skill Ripjaws V 2x8GB 2400MHz - https://www.amazon.co.uk/dp/B013J7T5K6

I'm leaning towards the G.Skill since that model number does appear on the Gaming 7 supported memory list.

PS. Will be used with a 6600K, possibly OCed to 4.0, but not immediately. First build...
Title: Re: GA-Z170X-Gaming 7 Error Code 55 Memory Initialization Error
Post by: Believerguy on November 25, 2016, 06:25:49 am
Wow thank you this makes a lot of sense.  I thought about how the clock could be an issue but on Newegg, where i bought it from, it says:DDR4 3866*(*O.C)/ 3733*/ 3666*/ 3600*/ 3466*/ 3400*/ 3333*/ 3300*/ 3200*/ 3000*/ 2800*/ 2666*/ 2400*/ 2133.  So i guess you need to get into the bios with a non overclocked speed, only 2133 and then you can boost them.  That is a huge issue and I dont really want to buy more RAM but who knows how long it will take to fix this.  My RAM also says compatible with the Z170 which makes me even more mad.  Do you get an error 55 even if you dont put any RAM in?

This is a mistake about 80% of the people make. Yes it says you can run that memory. But you will have to really by theory OC the memory. That is why they put behind the clock speed a * or oc. It has been like this for years.

Most people think WOW I can run 3000 memory on the board. Yes you should be able to drop in 2400 to 3866 and it should run by default run at 2133. Like I said the memory controller is in the CPU. So is it the CPU or the board? 

The problem that the people are having with this series board is really bad. They are having problems with almost everything on the board.


Don't blame the users

Blame the motherboards, socket creaters and gigabyte . This board was released in a Long time , gigabyte still didn't fix it. 




I m sure we wouldn't deal with this problem if we bought asus or asrock




My z170x gaming 7 had the same issue with 55 code.

16 (8x2) gb 3000 ghz from corsair
Title: Re: GA-Z170X-Gaming 7 Error Code 55 Memory Initialization Error
Post by: Insaneone05 on December 17, 2016, 04:46:45 pm
I'm having a similar issue. I've been using this computer for a year. Just unhooked it from my parents house and moved it to my place and suddenly it won't boot. It just keeps restarting itself without recognizing monitor or any USB devices. Giving error 55. Any help would be greatly appreciated. Gigabyte gaming 7,  i7 6700k , tridentz 3200mhz only had them clocked at 2133 though. Have had no issues other than USB drives on the back not functioning properly.
Title: Re: GA-Z170X-Gaming 7 Error Code 55 Memory Initialization Error
Post by: haQQo on December 18, 2016, 06:27:18 pm
Hi, I am very regret and very sorry to have bought the GA-Z170X-Gaming 7. Unfortunately, I have a "Code 55" error.
My ram brand is like this:


2 PCS
HMA42GR7MFR4N-TF-Hynix-16GB-PC4-2133P-DDR4-REG-ECC-DIMM-Memory
Title: Re: GA-Z170X-Gaming 7 Error Code 55 Memory Initialization Error
Post by: andy9l on December 18, 2016, 11:17:42 pm
So I ended up buying 2x8GB G.Skill 2400MHz RAM (F4-2400C15D-16GVR) for my build - these are listed on the QVL.

First 50-60 hours of run time were absolutely fine. I was running 16GB @ 2133MHz, which was perfect. Then one day that dropped to 8GB (ie. only one stick now working). I haven't opened my case or even gone into BIOS...

Tonight, I've just tried a replacement set of the same RAM and neither of those modules work at all. So I've got one stick that seems to work perfectly well and three that don't. All the same model.

I've tried:

1. Enabling XMP
2. Manually changing frequency to 2133MHz and 2400MHz
3. Disabling fast memory boot
4. All combinations of modules in DIMM slots

My one magical RAM module works with any combination of the above, but the other sticks do not. I can add the non-working sticks alongside the working one to boot, but it only boots with 8GB.

Any other suggestions before I return this very, very questionable mobo?
Title: Re: GA-Z170X-Gaming 7 Error Code 55 Memory Initialization Error
Post by: andy9l on December 21, 2016, 11:36:53 pm
This was my solution:


Worked without a hitch.
Title: Re: GA-Z170X-Gaming 7 Error Code 55 Memory Initialization Error
Post by: galori on October 08, 2017, 01:39:53 am
Just posting here for others that may end up here, my problem ended up being like the other people here with the RAM seating.  When you fasten the sticks on one side, the other side lifts up slightly. After you seat the RAM sticks you have to push the whole stick again (on both sides) to make sure it remains inside. 

This fixed my error 55.
Title: Re: GA-Z170X-Gaming 7 Error Code 55 Memory Initialization Error
Post by: skfjfirnr on December 05, 2017, 09:16:17 pm
Hello!
I currently got this error code on my motherboard with 2 sets of ram, i got my 2nd set of ram off of the gigabyte site and list, a Ballistix Sport LT 16GB single, i'm getting no boot to windows or even option to access bios to change the 2400Mhz down to 2133 which i've seen as successful, What can i do? any help is appreciated, Thank you!
Title: Re: GA-Z170X-Gaming 7 Error Code 55 Memory Initialization Error
Post by: shadowsports on December 06, 2017, 04:19:11 am
Greetings,
I would suggest starting your own thread.  Provide your complete system specs, BIOS rev and model of your memory kits. Brand, model #'s, etc so we have a better understanding of your system.  We cannot tell this from your post.