ATI X1900 XT Lockup Issue

Since no one else has taken this on for you,Ill give it a go.First,whats the specs of your rig,mobo,psu,ram etc second,are you ocing?

Specs:

Mobo: Gigabyte GA-965P-DS3 (Intel Core 2 Duo 6600)
PSU: Antec TruePower 2.0 550W
RAM: 2x1GB Crucial Ballistix DDR2 PC2 5300

The only other stuff in there are 2 SATA HDDs and 1 18x DVD Burner

I am not overclocking, although from what i've read the card may be overclocking on it's own... If there is a way to turn this off it seems like it would be worth a try but I haven't seen anywhere that says how to do it.

Check your CCC settings,is it still locked?If so then youre not ocing.And is all your 3d apps/games doing this?Or is it just a certain game?What drivers are you using?Was it a clean install?

The driver I have currently installed is the NGO ATI Optimized Driver 1.6.4. I have also tried the latest Omega Driver, and the two most recent ATI versions. I'm not sure where the corresponding settings for overclocking are in the current driver, it would seem somewhere in ATITool that it uses. I am currently at work, I'll have to look around for it when I get home tonight.

A while ago when I was first encountering the problem it happened in both World of Warcraft and Civilization 4, I haven't tested it in Civ4 since I was using the ATI driver though.

It was a clean XP install a few weeks ago, but I've installed a few different drivers since so I'm not sure how clean it is anymore.

Oh, interestingly enough though the 3d demo/benchmark thing in ATItool and the Omega driver both work without a problem, and take the board up to a much higher temperature than any of the games ever do. I do, however, remember the first time it happened being in 3dmark, before I had even installed WoW or Civ4.

Yeah, the overdrive settings appear to be locked... so it would appear I'm not overclocking...

I am having the exact same problem and its driving me nuts

Specs:
AMD Athlon XP 3700+
4 gigs DDR Ram
ATI Radion 1900 XTX
300 Gig SATA HD
DFI Infinity RS482 Motherboard

I ended up returning my card but after getting an nvidia card to replace it I started getting different errors that led me to a memory error my build had. I don't know if it was the underlying cause of the graphics errors or not, but try running memtest86 to check your memory.