Hi I have been having this problem for about 6 months now. When i purchased this barebone styled pc, it was fine. Then out of no where it would crash when i tried to play games. It started fine, i was able to play games. Then it started to get worse and worse. I sent it back into the company i bought it from, and they said that it was an OS error and that the hardware was fine. I DO NOT BELIEVE THEM ONE BIT! I just installed Windows 7. The pc crashed and froze a few times while trying to Boot from CD to install windows 7. When the pc freezes, my USB logitech g5 mouse will turn off. So i normally used that as a way to tell if my pc crashed and if i wasnt able to wake it from hibernation. Also, the pc will crash and repeat a sound over and over.. most of the time it picked some strange noise to repeat. I opened up Microsoft word, and it also crashed. Then after the reboot, i opened word again and it was fine. Specs: * Intel Core i7 920 2.66GHz (Quad Core) 8000K * Intel Socket 1366 CPU fan * MSI X58 Pro, DDR3, Cross Fire, GB LAN, iEEE * 6GB (3x2GB) PC3 8500 DDR3 1066 Triple Channel * NVIDIA GeForce 9800 GT * 500.0GB Western Digital 7200RPM SATA2 UDMA 300 16m cache * Hard Drive Cooling Fan Aluminum Internal * Samsung LightScribe 22x SATA DVD Recorder Dual Layer +R/RW -R/RW * Sound Blaster X-Fi Xtreme Audio * Wireless 802.11 N 150MBs LAN USB Adapter * Nikao Black Neon ATX Case w/ Temperature control, front USB & iEEE * Dual Case Fans 80 mm DC fan (two fans) * Corsair 750W ATX Power Supply, SLI ready Thanks in advance! I hope this problem goes away!!