Can we get an official response from Gigabyte regarding Z68 cold boot?

[Neil79]

After 3 days of no cold boot issues, today I go out for two hours come back home, turn the system on it doesn't show a boot screen with no video display it shuts itself off . I take out the psu cable, plug it back in the system boots on it's own and again it shuts off 

Take out the psu cable again, plug it back in system boots on it's own and it works perfectly back into windows   

[Dark Mantis]

Just as a matter of interest try this. Remove the CMOS battery and then boot up. Obviously you will be in a situation whereby you have no date and time but apart from that it should enable booting without the cycling I think.

[spurst]

I've posted this issue at the Tweaktown forums hoping we get it resolved over there.

http://forums.tweaktown.com/gigabyte/47264-can-we-get-official-response-gigabyte-regarding-cold-boot-loop-problem-hitting-p67-z68-boards.html#post413357

[cracker]

WOW I am so glad I found this thread I just came home from Comp USA were I was convinced to  buy a GA-Z68AP-D3 and  when I got home I opened the box and it was not the  one I saw in the case  it was a (rev. 2.0) and had the mSata  on the board which is not going to work for me with  the OCZ vertex plus SATAII he sold me.  so I started  doing a little research  and found this thread  THANK GOD I have not opened the bag.   Its going back tomorrow with 60 pages on the UK site and IDK how many on this one  it is obvious I don't want to  have the headache at all I do not overclock  I bought the  heavy board for reliability  random reboots is not an option .   I am going to go back and buy the Asus  I walked in to get the 8 year old one I have is still reliable  and I expect the same.  and I can still download drivers for it at there site. 

Pity I was looking forward to it.

[cracker]

appears that Asus  has a similar problem http://www.youtube.com/watch?v=OTyyHEldt3o

[Neil79]

appears that Asus  has a similar problem http://www.youtube.com/watch?v=OTyyHEldt3o

That's not a cold boot issue

[Neil79]

Cold boot issue this morning, 4DAYS LATER from the previous one!!. Just don't understand it

These are my settings, happens at default too!. Sometimes within a day it cold boot's, sometimes as above 4days later. Getting annoying now

I5 2500K 4.7GHZ

BIOS VERSION - F7C

\MB - ( M.I.T )/
\Advanced Frequency Settings/

CPU CLOCK - 33X
BCLK - ( DISABLED ) left at default 100mhz
EXTREME MEMORY PROFILE XMP - ( PROFILE 1 )
SYSTEM MEMORY MULTI - ( AUTO )

\Advanced Cpu Core Features/

CPU CLOCK RATIO [33X]
PWN FREQUENCY CONTROL [ AUTO ]
INTERNAL CPU OVER CURRENT PROTECTION [ AUTO ]
INTERNAL CPU PLL OVERVOLT [ENABLED ]
RATIO CHANGES IN OS [ DISABLED ]
INTEL BOOST TECH [ ENABLED ]
RATIO 1 - 4 [ 47 ]
TURBO POWER LIMIT [ 300 ]
CORE CURRENT [ 300 ]
CPU CORES ENABLED [ ALL ]
CPU ENHANCED HALT C1E [ AUTO ]
C3/C6 STATE SUPPORT [ AUTO ]
CPU THERMAL MONITOR [ DISABLED ]
BI-DIRECTIONAL PROCHOT [ AUTO ]

\Advanced Memory/

EXTREME MEMORY PROFILE X.M.P [ PROFILE 1 ]
SYSTEM MEMORY MULTI SPD [ AUTO ]
PERFORMANCE ENHANCE [ STANDARD ]
DRAM TIMING SELECT SPD [ AUTO ]
CHANNEL A - B [ AUTO ]

\Advanced Voltage Settings/
MULTI-STEPS LOAD-LINE [ LEVEL 6 ]
CPU VCORE [ 1.3350V ]
QPI/VTT VOLTAGE 1.050V [ 1.20v ]
SYSTEM AGENT VOLTAGE 0.920V [ AUTO ]
DYNAMIC VCORE [ AUTO ]
GRAPHICS DVID [ AUTO ]
CPU PLL VOLTAGE 1.800V [ 1.800V ]
DRAM VOLTAGE 1.500V [ 1.625v ]
DRAM VREF 0.750V [ AUTO ]
DRAM TERMINATION 0.750V [ AUTO ]
CH-A/B ATA VREF 0.750V [ AUTO ]
CH-A/B ADDRESS VREF [ AUTO ]

\Advanced Bios Settings/

QUICK BOOT - [ DISABLED ]
BOOT LOGO - [ DISABLED ]

\Misc Settings/

ISOCHRONOUS SUPPORT [ ENABLED ]
VIRTUALIZATION TECH [ ENABLED ]

\Power Management/

HPET SUPPORT [ ENABLED ]
HPET MODE [ 64BIT ] - 64bit windows versions

\Pc Health/

CPU SMART FAN CONTROL [ DISABLED ] 

[Dark Mantis]

Hi

From the way things are happening and the timescales involved it sounds more like a software/firmware issue rather than a hardware one. I would have expected a more steady response and the problem showing at regular intervals if it were hardware.

[spurst]

There are lots of threads in this forum about this issue, and there are lots of posts all over at other sites about this issue. I think the reason there aren't more, is that its an intermittent problem in the sense that it doesnt always happen. I'm willing to bet that most users ignore it, or simply don't know where to get help about it. Maybe they think its a CPU, RAM, PSU, or Video card issue? We just happened to have extra hardware to plug everything else in and determine that its an issue tied to the motherboard.

[Dark Mantis]

If, as you say, it is an intermittent problem have you any idea why or what is causing it ? Most problems that are hardware based are replicable and with the right circumstances be made to occur.

[Neil79]

http://forums.overclockers.co.uk/showthread.php?t=18338090&page=4

See here, currently working with MOOGLY's who also had Cold boot issues who hasn't had any for awhile since either using F6 bios or Certain settings different to mine. The settings are not wildly different so unless he gets any it might be easy enough to find the cause..

I hope 

[Neil79]

Cold boot issue about 5mins ago, so it's NOT EXTREME MEMORY PROFILE X.M.P related. It's heading towards it being the bios itself F7.

[horrorwood]

No problems since swapping to a P8Z68-V PRO/GEN3. I am even using two sets of complete different ram, both of which didnt work on the gigabyte. So you can pretty much rule out the following, CPU, RAM, GPU, PSU, SSD, HDD as being the problem

[Neil79]

UPDATE !!!!!!!!!

No cold boot in two days even when not having the system on for hours and the only thing i've done according to someone elses advice is

PLL OVERVOLTAGE = DISABLED

If this is the  cause, why does enabling pll over voltage cause cold boots?

[Neil79]

I cured my cold boot issues , it was down to the PLL overvoltage setting, with it ENABLED or even on AUTO it wont be long till I cold booted!, Disabled it and haven't had a cold boot in 5days. Gigabyte needs to look into this, it should NOT be cold booting if the PLL overvoltage is set to enabled

This is my final setting

I5 2500K 4.7GHZ

BIOS VERSION - F7B

\MB - ( M.I.T )/
\Advanced Frequency Settings/

CPU CLOCK - 33X
BCLK - ( DISABLED ) left at default 100mhz
EXTREME MEMORY PROFILE XMP - ( PROFILE 1 )
SYSTEM MEMORY MULTI - ( AUTO )

\Advanced Cpu Core Features/

CPU CLOCK RATIO [33X]
PWN FREQUENCY CONTROL [ AUTO ]
INTERNAL CPU OVER CURRENT PROTECTION [ AUTO ]
INTERNAL CPU PLL OVERVOLT [ DISABLED ]
RATIO CHANGES IN OS [ DISABLED ]
INTEL BOOST TECH [ ENABLED ]
RATIO 1 - 4 [ 47 ]
TURBO POWER LIMIT [ 300 ]
CORE CURRENT [ 300 ]
CPU CORES ENABLED [ ALL ]
CPU ENHANCED HALT C1E [ AUTO ]
C3/C6 STATE SUPPORT [ AUTO ]
CPU THERMAL MONITOR [ DISABLED ]
BI-DIRECTIONAL PROCHOT [ AUTO ]

\Advanced Memory/

EXTREME MEMORY PROFILE X.M.P [ PROFILE 1 ]
SYSTEM MEMORY MULTI SPD [ AUTO ]
PERFORMANCE ENHANCE [ STANDARD ]
DRAM TIMING SELECT SPD [ AUTO ]
CHANNEL A - B [ AUTO ]

\Advanced Voltage Settings/
MULTI-STEPS LOAD-LINE [ LEVEL 6 ]
CPU VCORE [ 1.340V ]
QPI/VTT VOLTAGE 1.050V [ 1.20v ]
SYSTEM AGENT VOLTAGE 0.920V [ AUTO ]
DYNAMIC VCORE [ AUTO ]
GRAPHICS DVID [ AUTO ]
CPU PLL VOLTAGE 1.800V [ 1.800V ]
DRAM VOLTAGE 1.500V [ 1.625v ]
DRAM VREF 0.750V [ AUTO ]
DRAM TERMINATION 0.750V [ AUTO ]
CH-A/B ATA VREF 0.750V [ AUTO ]
CH-A/B ADDRESS VREF [ AUTO ]

\Advanced Bios Settings/

QUICK BOOT - [ DISABLED ]
BOOT LOGO - [ DISABLED ]

\Misc Settings/

ISOCHRONOUS SUPPORT [ ENABLED ]
VIRTUALIZATION TECH [ ENABLED ]

\Power Management/

HPET SUPPORT [ ENABLED ]
HPET MODE [ 64BIT ] - 64bit windows versions

\Pc Health/

CPU SMART FAN CONTROL [ DISABLED ]

As I said

 INTERNAL CPU PLL OVERVOLT - ENABLED = COLD BOOT
 INTERNAL CPU PLL OVERVOLT - DISABLED = NO COLD BOOT