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Can a PSU cause video card post errors?

K

Kirel_Redhand

Junior Member
Hi all..

I posted here also http://forums.anandtech.com/showthread.php?t=2323256


A brief synopsis: I was playing BF3 last night when I noticed some artifacting (out of the blue) on a fairly new Raedon 7950.. Not tearing, but black pixilated boxes appearing out of the blue, about 4' by 4' (so quite sizable).

I figured that after the match I'd do some troubleshooting, but within minutes, the computer froze. It was locked up hard and a manual power reboot was the only option.

Since then, I'm getting a post code of 85 (on the evga p55 ftw motherboard) which means that it's a video error.

The 7950 is fairly new (6 months old) and the old card was still working when I replaced it. Putting the old video card in didn't change anything - same error message.

Now, I know that the video card is getting power, because the GPU fan turns on when the PC is turned on, but could the PSU be bad? How could I test it? Any ideas?
 
If you have a multimeter, you could test if the PSU is supplying proper voltage.

See how here: http://forums.anandtech.com/showthread.php?t=257485

I would take a look at the voltages while the computer is at idle and at load (like having Furmark and Prime95 running to load both the gpu and cpu).

If you haven't tried already, you could reinstall the video drivers, or maybe even use an older driver to see if it's the newer drivers that is causing the problem.
 
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