Installed new cpu and now my computer won't boot

Toggle sidebar Toggle sidebar
X

Xreaper

Distinguished
Dec 31, 2011
5
0
18,510
So I order a new cpu (amd fx 8350) to replace my old one (amd phenom ii x6 1055t). The old one worked but I wanted to upgrade. After installing the amd fx 8350 into my mobo (Gigabyte 990fxa-ud3 which is only about 4 months old) I tried to turn on my computer but it turned on then off. So I tried again this time it would turn on and stay on but won't boot. No beep or anything. Next I tried reinstalling my old cpu that worked and now my computer is doing the same thing with the old one. I tried reseating the ram, reseating the cpu, and resetting the cmos, and nothing worked. It also at one point would turn on for a second then turn off until I would reseat the ram. I would appreciate any help I am quite frustrated.

Mobo - Gigabyte 990fxa-ud3 rev 4.0
Old CPU - Amd phenom ii x6 1055t
New CPU - Amd fx 8350
 
Sort by date Sort by votes
RaDiKaL_

RaDiKaL_

Splendid
Apr 17, 2006
3,702
1
26,960
Which revision is your motherboard? revisions 1 to 3 have all their weird bugs so that's something to consider.

It's possible that while replacing the CPU you moved some cable so make sure every cable is properly connected where it goes.

I'm assuming you applied new thermal paste with every CPU swap.
 
Upvote 0 Downvote
nekulturny

nekulturny

Splendid
Feb 9, 2012
5,150
0
26,460
My initial guess would be that you might want to try flashing the BIOS to the latest version, if you were able to uninstall the old CPU, put the new one in no boot, but were successfully able to reinstall the old one and get it to POST. I assume you connected everything correctly based on your success with the reinstall of the old CPU. Its possible something got messed up along the way, personally I had the UD5 variant of that same board and had trouble with it, and wasn't particularly thrilled with Gigabyte's customer support either. I wouldn't even bother playing with it, I'd just call Gigabyte and RMA it have them send you one with the latest BIOS.

Flashing the BIOS is not without risk of "bricking the board", but it is covered under warranty in the slim chance it happens, the risk of bricking increases the older the board is, so good idea to do it while its under warranty. This happens with both AMD and Intel occasionally, boards may support newer gen CPUs, but may require a BIOS update to do so.
 
Upvote 0 Downvote
X

Xreaper

Distinguished
Dec 31, 2011
5
0
18,510


I have rev 4

 
Upvote 0 Downvote
RaDiKaL_

RaDiKaL_

Splendid
Apr 17, 2006
3,702
1
26,960
Being Rev 4 its free from those bugs and it's initial BIOS F1 directly supports the FX-8350 so no issues there...

Seems to be a matter of something not plugged in correctly, if after checking everything there's no success, try to breadboard your mobo and see how it goes.
 
Upvote 0 Downvote
You must log in or register to reply here.

TRENDING THREADS

Latest posts

Moderators online

Share this page

COMPANY
RESOURCES
FOLLOW
Top Bottom