Hi all, I really need some espert advice... I have just built my own system (not HCPC, just a general PC). It was all going so well at first! But now I haver serious instablility problems - My system keeps crashing whilst plying games (Jedi Knight II runs perfectly, but Zoo Tycoon and Max Payne crash almost immediately). My system (relevant specs): Antec Performance II Soho File Server ATX case with 350W PSU Soltek SL-75DRV5 Mainboard (AMD Recommended) AMD Athlon XP 1700+ 256MB RAM PC2100 IBM 120GXP 7200rpm 60GB HDD Leadtek GeForce 4 Ti4200 128mb A250 LE TD MyVIVO Soundblaster Live! Player 1024 I started out with the drivers that came with the graphics card, but they were unstable. Now I have just installed the latest Detonator 40.71 but they are no better... I don't think it is an overheating problem - My Heatsink came with the processor in a pack and the atx case has three other fans, and even the gfx card has a heatsink fan. In the BIOS the temperature section has lots of different readouts: Temperature ABSII 53c Temperature 1 40c Temperature 2 55c I don't know whether that is relevant or good or bad? Any suggestions would be really appreciated... Do I keep on trying different Detonator drivers to see if I can find one that works well? Thanx! Lex.