I have this problem with my computer, its specs is p4 1.77 mhz with a 384 MB DDR memory. its video and audio are both on board. it also has one CD rom and one CDRW, 2 hard disk (40 gb and 13 gb) and 300 watts power supply. now the problem didnt occur in the early stages. when my computer reached more than a year then the problem occured. when I play games like NBA live or I open applications like flash or dreamweaver. It will restart without any prompt. even in microsoft word. I cannot work properly because of this problem. anyone got some suggestions?