First; here are my specs: Sager NP5796 / M570ETU QX9300 @ 2.93Ghz 8800M GTX 4GB RAM Okay, this problem actually started long ago, but has gotten worse in the last two weeks. I noticed when playing GTA IV, that sometime the game would just freeze for maybe 5 or 6 seconds. Then it would run perfectly normal again. When I looked in the RivaTuner-log for videomemory, I saw that videomemory had been dumped when the game froze. These weird freezes would happen maybe 2-3 hours apart, but eventually they started happening almost every 30 minutes. They usually started occuring when I had played for maybe 3-4 hours. I thought maybe it was a memory leak or something and didn't pay it much attention. No big deal I thought. Fast forward a month, and I started getting more and more error messages about "nv4_disp has stopped working normally and you must reboot your system". These messages popped up in a normal windows pop up box. Also, along with this message the dekstop resolution would drop down to 640x480 and over to 16 bit. These errors I got maybe once every week or so. No big deal I thought. Fast forward to today. For the recent weeks I've only been experiencing the nv4_disp error maybe once a week. I haven't had time to play any games. So today, for the first time in 2-3 weeks I had time to play some games. So I started GTA IV. Immidiatly after I went out of the safehouse, I noticed a strange FPS drop that has never happened before. The FPS got a bit better after 20 seconds or so. No big deal I thought, and stole a car. After driving around for 30 seconds, the game freezes. And some weird happened, a texture like this filled the entire screen. The radar was completely borked, it turned into a black rectangle with some blue stuff here and there. Game froze completely. So I used ctrl+alt+del to terminate the game. After 10 seconds on the desktop, my mouse stopped on the screen and everything became unresponsive. So I had to do a hard reboot by holding the powerbutton for 5 seconds. I tried GTA IV again. Same thing happened, except this time a texture of a brick wall filled the screen. This time, pressing ctrl+alt+del didn't help so I rebooted. I've tried the game 10 times now. Same result every time. First some weird FPS drop after I go outside the safehouse. Then the game either shows a random texture on the whole screen, or just freezes suddenly. Sometimes ctrl+alt+del works, sometimes not. I wanted to play a game, so I fired up Battlefield 2. Everything seemed fine for the first 10 seconds. Then all textures suddenly turned to a mixture of black, purple, yellow, you name it. The text on the screen also became borked completely. Crosshair turned into 4 red, ugly rectangles. See [http://img21.imageshack.us/img21/9520/32qw3.jpg However, the hand and weapon model in front of you, and models of other people around the map, seemed fine. Game also ran fine, no FPS drops or whatever. But I can't play with these ed textures. So I tried COD4 Singleplayer. PC locks up during the introduction where the guy talks about Soap. 3 games, all same results. Freezing, textures ing up, sometimes ctrl+alt+del works, sometimes don't. And sometimes even if I manage to terminate the game, the desktop will freeze 10 seconds after I've terminated it. Let me tell you that I tried 2 different drivers (newest and 179.48), and all had the same result. Re-installing drivers does not fix this issue. I always used safemode+driver cleaner and driver sweeper to remove drivers completely. The temps of my CPU are 89-98 under load. The temps of GPU can reach 95 degrees under load. I know those are high temps. I tried cleaning dust. Temps decreased a bit, but problem still remains. What's going on here???