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Questions about GIGABYTE products => Motherboards with AMD processors => Topic started by: Cheese_Sticks on September 30, 2011, 08:33:26 pm

Title: 990fxa-ud3 won't power on
Post by: Cheese_Sticks on September 30, 2011, 08:33:26 pm

Hi all, last week brought a 990fxa-ud3 rev 1.0 which the following day powered off and wouldn't switch back on.
the first thing I tried was clearing the CMOS then swapping the psu for spare, with no success. I then removed the motherboard from the case and checked over the board for blown components etc it looked like nothing was amiss. Then I proceeded to do a build outside of the case(cpu,1 stick of memory and graphics card only) which was also unsuccessful, cpu fan spins for a split second but thats it. all of my components are now back in my old motherboard(770t-ud3) working fine.

So I'm thinking the board is dead, but I would just like to check here that I am not missing anything before sending the board back.

thanks :)

Title: Re: 990fxa-ud3 won't power on
Post by: Dark Mantis on September 30, 2011, 09:07:09 pm

Hi and welcome.

How did you clear the CMOS ? Was it the way we recommend  by removing the battery and then waiting for an hour ?

What PSU are you using to power it all ?

When you say "everything is back in the old board" what exactly are you talking about ?

Title: Re: 990fxa-ud3 won't power on
Post by: Cheese_Sticks on September 30, 2011, 11:22:20 pm

Quote from: Dark Mantis on September 30, 2011, 09:07:09 pm

Hi and welcome.

How did you clear the CMOS ? Was it the way we recommend  by removing the battery and then waiting for an hour ?
I took the battery out, and left it for just over an hour.

What PSU are you using to power it all ?
Coolermaster silent pro gold 600w

When you say "everything is back in the old board" what exactly are you talking about ?
cpu, psu, memory & graphics card

Thanks for responding

Title: Re: 990fxa-ud3 won't power on
Post by: klh591 on October 01, 2011, 03:16:34 am

The proper way to clear the CMOS on ALL AMD Chiipset motherboards from GIGABYTE is to jumper the CL_CMOS pins   (on the 990FXA-UD3  -
next to r the F_PANEL in  the corner) WITH ALL POWER OFF.  Count to 10 then remove the jumper and reboot.  You should be back to factory settings.

I've used this numerous times on: 2   690, 2  780, 2  785, 1  790X, 4  880GA, 1  870A, 2  990FXA-UD5, and 2  990FXA-UD3  Boards that I am
currently using in my house and it has never failed to restore settings.
                                                     

Title: Re: 990fxa-ud3 won't power on
Post by: Benz on October 04, 2011, 08:22:11 pm

Waiting an hour for CMOS to clear is a bit ridiculous don't you think? All you have to do is wait for capacitors to discharge the energy stored into them, and that takes 2-3 minutes. But if you do a jumper clear CMOS then they discharge the energy immediately.