Hi. I'm new to the forum. So here's the deal. My pc has been crashin' for some time and by now I've ignored it but since not being able to play GTA4 I decided that I should try to fix the problem. So I start the game and play it for 10-30 minutes(30 if lucky) and then the screen goes black and the sound starts to loop like when i get a BSOD, but there's no BSOD screen but a black screen. It doesn't happen on all games. It happens when playing Bioshock, GTA4, Hitman:BM and so on. Doesn't happen on COD4. Also BSOD sometimes happens when using utorrent(maybe connected) I have the latest drivers so I think that's not the problem. My setup: Intel core duo E8500 wolfdale 4GB RAM Mushkin Value Series 800MHz DFI Lan Party DK P45-T2RS Sapphire ATI Radeon HD4850 Toxic Chieftec 550W Os:Windows Vista Ultimate 32-bit SP1. DX 10 I don't think that other parts matter that much. Greets and thanks in advance.