I had a little problem with Interweb so this may be a double post.
Anyway, I will try to be brief...
I have a Asus 7900gt with no overcloking or anything like that. Temperatures are low 32C/55C and my system temps are all low. My CPU is a 3800 X2 at normal speed. Anyway...
I have had the card for 18 months and its always been a bit of a pain in the *&^. The problem is artifacting, texture rendering problems etc. This is mostly in games, which I dont do very much.
The problem has now become worse. When I boot I get about 10 "pixels" which are red green or blue. These stay in the POST screen, the windows XP logo and then are in the desktop. The "pixels" vary in size depending on the resolution of the display. In the POST they are about 5*5 monitor pixels.
They dont go away with...
- more cooling
- newer/older drivers
- no nVid drivers
- safe mode
My questions is this..
As they are appearing in the POST does this mean its most likely a hardware issue. I dont know much about GPU's but I remeber being told that PCI-E cards have a basic chip that deals with POST/STartup before themain core deals with games etc? I could well be wrong.
I have no friends that have a PCI-E pc so cant check.
PS. I tried undercloking and no change what so ever.
Where did the 7900GT come from? did you get it used or did you have it and this just started to happen. Sounds like the memory is going bad. This is what happens in cards when you clock the memory to high. I have a feeling it may be going bad at stock rates.
Those symptoms may come from insufficient power.
1) Is the 6 pin pci-e power connector good and plugged in properly?
2) Is there a place on the mobo to plug in a 4 pin molex auxiliary power lead? Some mobo's use this to give the pci-e slot the full 75w that it can deliver, and that your card needs.
I had similar issues with my sons X1900GT but could test it in my computer to check on power or card issues and since it brought all the problems with it, it is now being RMA´d although it is 18 months old. thank god for 2 year warranty.
I don't believe the drivers would give a snow artifact (I call it snow cause its dots on the screen) I would return it to be honest. Maybe the manufacturer will send a replacement and you send the broken card back. Not sure how they operate.