Hi! I have bought a new PC. CPU - Athlon 64 3500+ S.AM2 MB - NForce 550 S.Am2 Biostar VGA - Gf7600Gt PCI-E16 256 Mb Giga-Byte RAM - Dimm 2x512MB PC6400 DDR2 800 MHz A-Data PSU - Atrix 500W SB - Creative SB live 5.1 digital When i installed games on my PC i realised that all games crashes after 5-30 min. Temperatures are Ok (Cpu 23, VGA 40-60, MB 40, Hdd 40 celsius) PSU voltage are normal I installed all the newest drivers, but games still crashes. I don't know what can I do to fix my PC. Please someone help me! Thanks!