I'm currently experiencing some problems with my PC which prevent me from using my games (I'm trying with Steam games and none of them works as it should).
When I play, after a while, the textures in the game begin to "flicker", some artifacts appear on the screen (like wild triangles) really really fast, the textures on the walls for example disappear and appear back very quickly, and then suddenly the game crashes, with the graphics stuck on the same frame and the audio playing the same 1/10 sec over and over.
When this occurs, I hit Ctrl-Alt-Del which summons that blue screen, and just press "Cancel" which takes me back to the Desktop. The game is minimized, I maximize it and it works again. So I don't have to kill the game, but it's boring.
It occurs for Portal, Portal 2 and HL² (for HL², it has never really crashed, but the textures do the same. I guess it would eventually crash if I played long enough).
Sometimes I can play 20 minutes without any problem, and sometimes it occurs every 10 seconds or so.
Sometimes I could see an information tip at the bottom of the screen in Windows after hitting Ctrl-Alt-Del, which mentionned a graphic bug that had been fixed. My GC is a GTX 285 with the latest drivers from nVidia website.
I thought it could be a RAM problem so I performed a memtest, but after one pass no error had been found.
Any idea that could help ? Thank you
Thank you for your answers so far. I would like to add that other games don't crash, so it might be because of some special call by the Source engine... which would imply an incompatibility with the driver I'm using. But this would be strange, since my video card is pretty mainstream and the driver I'm using is from the official website.
SpeedFan says :
GPU : 52 C and there is a little "flame" icon. Up to 64 when playing. I think it's a pretty normal temperature.
I tried playing with the fan on maximum power, but it doesn't change anything. I also installed all the last drivers for my motherboard from Gigabyte website (Intel, SATA and audio).
I'm opening the beast now, to clean the fans and test with one less RAM stick :/