GA 890fxa ud7 will not boot

[Dark Mantis]

Agreed! However these new style Gigabyte boards are less prone to that as they have a heavier duty(X2) copper layer in the motherboard to power them.

[absic]

This is true but, the Noctua Fans do not like the ramped voltage supplied by the motherboard headers and will not run if you have any of the power saving or Cool n Quiet technology enabled.

Connecting them directly to the PSU avoids any problems. Yes, this does mean that they run at full speed all the time (unless you use the step-down cables they supply) but even at full speed they are for all intents and purposes silent.

[zinchead]

Hello people.

When I first got the mother board, windows 7 installed with no problems. The next day I turned the computer, it wouldn't boot. I played around with it for 7 days, eventually, asking for a new mother board and memory.
New mother board and memory in place, I installed windows 7. Ran it a full day, but my final install was the latest crossfire drivers for the 2x 3870x2 cards I have. I have not been able to boot up since. No bios screen display or bleeps from the small speaker. The led display on the board shows code"88".

Bear in mind this is the same problem I had with the first board. Initially, I thought the problems where with my Intel ssd hard drive. So I used an ide drive to install windows. That proved the thoery wrong about the SSD drive.

Where do I go from here?

[Dark Mantis]

strip everything off the motherboard and see if it will try and boot. If it does add one component at a time and see how it goes.
Sorry I forgot that I have already suggested this earlier today, have you tried it? You never answered.

[Dark Mantis]

First thing to try is swapping the memory to the two blue slots. Failing that build the whole thing up outside the case. I know that you have only just rebuilt it but that is the best way to troubleshoot. Lay something like a towel (Anti static)down on a table and put your components together on there.

The only difference in the coolers as oggmonster explained is that the extra wire is to enable control of the fan's speed and measure it. You may need to turn the alarm off in the BIOS if you only use a three wire connection. I take it you do have a buzzer installed? Are you getting any POST beeps to let you know what the problem is?

Have you done this?

[absic]

Hi,
Are you sure that the error code is 88 and NOT 8B.

I believe that 8B is a possible memory error.

UPDATE: having just checked through your mobo manual, RAM above 1333 Mhz should be put into slots 3&4 (think these are the blue slots on your board)

[Dark Mantis]

Actually absic the white slots are 3 and 4 but I have just been checking through the manual. If you are using Dual Channel mode then you need to put one module in DDR3_1 and one in DDR3_2  or use DDR3_3 and DDR3_4 if it is high speed memory.
Check page here: http://download.gigabyte.eu/FileList/Manual/mb_manual_ga-890fxa_ud7_v2.0_e.pdf

[zinchead]

strip everything off the motherboard and see if it will try and boot. If it does add one component at a time and see how it goes.
Sorry I forgot that I have already suggested this earlier today, have you tried it? You never answered.

I have finally made an "out of the box" built.
Still no difference. I moved memory about and I got a lend of a another video card.

I will rma it back to suppliers. they are going to think something odd, but I feel it must be a bad batch of mother boards.
Either that or it does not like my other components.

[Dark Mantis]

The only other thing it could possibly be is the PSU. I know it "works" but maybe not properly. The 12v rail may be low. I would try and change it out if you can. At least it will eliminate it from the equation.

[zinchead]

The only other thing it could possibly be is the PSU. I know it "works" but maybe not properly. The 12v rail may be low. I would try and change it out if you can. At least it will eliminate it from the equation.

I have already changed the power supply. It was powered with a 1000watt. I tried it with my old 850 watt antec.

No difference.

weird

[Dark Mantis]

Right well at least that is another thing ruled out. Of course it could be the CPU. We have had several recently on the forum that were bad.

[zinchead]

You know. Thats the only piece if kit I was not even thinking of.
The only way I can check it is to try another am3 board. Thats not easy.

[Dark Mantis]

You know. Thats the only piece if kit I was not even thinking of.
The only way I can check it is to try another am3 board. Thats not easy.

Or another chip?

[zinchead]

will my old x4  940  cpu work in the new boards?

[Dark Mantis]

As far as I am aware it should because AMD sockets are backwards compatible but I am not 100% sure so I should check first. Absic is the man to ask but he is not here now. Maybe someone else will know. I notice Venganza is on the forum and he is pretty genned up on that sort of thing. Maybe PM him.