i have been having this problem with my pc...when ever i play games its a while b4 it totally shuts off...the 2 digital readings at front of case are flashing...i have 2 hdd totalling 200gb..i gb of ram...333ddr i think in slots 1+3 dimm slots...graphics card is a radeon 9800 pro...mobo is an abit nf7-s with athlonxp 2600+ i also run a cd-rw and a dvd-rw with a floopy too...i can run this comp normally otherwise, its just wehn i play games....my psu is only a cheap q-tec 550 watt which i think by looking on it only has a total of 14a on the 12v rail...would this guys be a cause for concern...replies are grateful...many thx in advance......