Hi there, My Computer is a NEC versa M400 model ,1g ram, 2.4ghz processor, intel Graphics card running on WinXP Pro Sp3. It has been Randomly shutting down when i play games or run lots of applications. It isnt an overheating problem because i already cleaned out my Fan with a cottonbud etc. and it still shuts off. I dont think it is a virus/spyware problem because i have a Norton 360 and i run So many scans after it shuts off. Its has done this before and sometimes i can play games and run apps for Hours and Hours and sometimes i can only Play games / run apps for 20mins before it shuts off. Plz Help!