GFX glitch mystery problem

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Rug77

Thread Starter
Joined
Sep 24, 2008
Messages
4
Hi there,

I'm getting graphical glitches like this ... (that's a mild example for clarity BTW)

It started after about a year with the current system.

Suspected expiring GFX card, so replaced X1950 with HD 4850. No change.

Replaced PSU (from 600W to 700W). No change.

Tried original card in different mobo with different CPU. No change.

Flashed BIOS and update mobo drivers. No change.

Removed sound and firewire cards. No change.

Ran memcheck86, removed each Ram stick (2 x 1Gb) one at a time and ran on the other. Slower booting, but no change.

No idea what to try next - there is no more hardware to swap.

Oh yes, reinstalled XP too. You guessed it ...

Please can anybody help ?

Rug77
 
Joined
Oct 19, 2006
Messages
720
Have you tried on a different monitor ?

Also if the cable is not integrated into the monitor you could try swapping that out ...
 

Rug77

Thread Starter
Joined
Sep 24, 2008
Messages
4
Tried a different monitor (although there is no way that a monitor or lead could 'invent' triangles... but hey, I was all out of ideas).

Reinstalled DirectX just to be sure.

I've pretty much reached the conclusion that the replacement card is duff.

I'll close this now, but may be back ...

Rug
 
Joined
Dec 31, 1969
Messages
6,922
Duh. Have you checked the GFX temperatures? Artifacting and such glitches are often caused by overheating...
 

Rug77

Thread Starter
Joined
Sep 24, 2008
Messages
4
Yes. I've set a profile which puts the fan up to 40%, and this is keeping the temp down to low 70s in game, and high 50s on the desktop.

I've also tried a full scandisk, and swapping the sata cable to the drive.

If I can find a suitable mobo at work (one with PCIe), then I'm going to try to install the card and game and test it here.

Failure will pretty much indicate it must be the GFX card.

Any other ideas for things I haven't tried yet ?

Thanks.

Rug
 
Joined
Oct 19, 2006
Messages
720
Can you get your hands on a PCI (or AGP if supported) gfx card . Seems like youve swapped out everything that can be swapped out . It seems unlikely to be the gfx card being faulty as you say you tried a different card with the same result . Maybe the PCIe slot itself (or the bus) is causing the problem . I know it's highly unlikely to manifest in the way described but rapidly running out of things to rule out ...
 

Rug77

Thread Starter
Joined
Sep 24, 2008
Messages
4
I tried the GFX card in a machine at work, and it was fine.

So down to either disk sending duff data (unlikely as same problem in several games, despite reinstalls), or a problem on the mobo around the PCIe bus or slot.

I'm going to try to find an old disk to install onto, but I think I know the result already ...

Rug
 
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