help!

[GSG9PH]

Guys.. help me out here.. my pc was running fine for abt 9 hrs.. just downloading files... then i started playing cs source 4 about 20-30mins.. then suddenly my pc REsTARTED!!! already happened twice... wat could b the problem?


PC SPECS

Intel 865PERL
intel p4 3.0E 800fsb
BFG 6800oc @ 66.93
xp pro sp2
2x 512 ddr400 centon
80gigs seagate 7200 rpm
msi cd rom drive 52x
sony diskette...
400 watts powersupply

p.s no overclocking done...all drivers updated, no cooling devices except 4 the two free fans with the casing..

 

[Jbace]

Probably are heat problems, check out the temps on your CPU and GPU after playing CS for about 10-15min.