Hi, I am posting this question in the hopes that someone has heard of this before:
I just got a refurbished EVGA 9800 GTX off of Newegg (at $130 - quite a steal). I tested it in Call of Duty 4, and in GTA San Andreas, but when I went to play Portal something strange happened;
In portal, 90% of everything looks like it should, but some wall textures show up multi-colored/neon purple. On top of that, the "liquid" textures all appear to be a dark maroon, where before they were green. The textures look completely out of place due to the colors, but the effects such as reflection and bump-mapping appear to still work. This only occurs in specific parts of the levels, not all the time or even most of the time.
I am concerned that there may be a defect in the card, and I'm wondering if I need to return it - does anyone know what this could mean?
Intel C2D E6700
ASUS P5N-E SLI
EVGA 9800 GTX
3GB OCZ OC DDR2
Antec NeoPower 550W
MS Windows XP SP3
WD Raptor 32GB HDD, Hitachi Deskstar 500GB (x3) RAID5
I think vochtige has got the right idea. It happens to me too when I change the video settings or start alt-tabbing. Just restart the game and it'll go away. And it happens to most steam games as i saw it with TF2 also.
Thanks for the info! Yeah, I tried it again. The problem : I have a <ahem> copy of the game I downloaded, and it won't hold the video settings I choose permanently. So I can't tell for sure if that's the issue, but enough people here have the same issue so it sounds right. Plus, no other games display the problem, so I'm sure I'm OK. Thanks for the post!