Hello. I've built a computer about 3 weeks ago. So it's brand new. Specs: GTX 680, i5-2500k, 8GB 1600 MHz RAM, P8Z68-V PRO/GEN3, 500GB 64MB cache Western Digital @ 7200 RPM, 22" 1080p monitor, TX850 power supply, 64-bit Windows 7 Home Premium SP1. It started with my first game, Crysis 2. The game would crash, and I'd have to Alt+Tab out of it. Windows detects an error with Crysis 2, and has to shut it down. I also once got a PFN list corrupt blue screen. After patch was installed, the game would crash straight after loading and the only way to play is to start a new game. Then I played Metro 2033, but I got no error with that. Phew. Then I started Far Cry 2. Same problem, like in Crysis 2. Crashes, and probably one or two corrupted PFN. Then I skipped straight to Battlefield 3. A few crashes, PFN list corrupts. Also, I got a video card manager BSOD (Nvidia Control Panel?), and just now, a 1000007e ('check for adequate hard disk space...'). Don't worry, I've more than 400GB left. Also, I don't believe I've had any random HDD erasing. I checked my RAM via the standard Windows RAM check, gave out no error. I've ran a driver verifier, got a BSOD on start, but got rid of the faulty driver (Daemon Tools) - I didn't check Windows drivers - but that didn't solve anything. I've reinstalled my Nvidia drivers, leaving out stuff like HD Audio and 3D vision (neither of which I use). The only drivers that I've installed, as far as I'm aware, is the Nvidia drivers for my video card, and some drivers for my wireless PCI card. What is the problem? Thanks for your answers in advance.