Ok so let me start off by saying my system is OCed but i know that isn't the problem. My ram has been tested with memtest for 12 or more hours with no errors. My CPU is running at 3.6ghz and is prime small FFTs sable for 24 hours. My video card (XFX 4890) has been tested with and without OC settings always having the same problem. I am pretty sure this is a Driver problem but want to make sure. This all started when i was using Win 7 64 Pro since well i got my 4890 when i started to use Win 7.. No matter what driver version i would use starting at 9.7 up to the 9.12 hotfix i get a lot of random PC lockups. It can happen during a video game or during web surfing or even watching a video file. This problem always happens if i am watching a video file from the HD. While watching a video file the PC will lock up with artifacts at the bottom of the screen or even with a sound loop, but it is still random meaning i can't do one thing and have it happen no matter what. sometimes it happens some times it doesn't. While playing video games the PC will just lockup with no artifacts but sometimes sound loops. What makes me think it is driver related is because the higher the driver number ie 9.9, 9.10, etc. the problem happens more often. Right now i am back at the 9.6 drivers testing them. I have also moved back to Win XP 64 but that doesn't seem to fix the problem. anything that you guys might think of trying would be great Thanks for reading this. Edit: I also wanted to add that I have tested the Video card with Crysis Warhammer Benchmark. Running the benchmark with OC settings and non OC settings in more then 20 to 30 loops. The Problem doesn't happen at all, but like i said it is purely random. I dont play Crysis enough to know if it would happen during game play.