PC restart while playing games

Computer Forum General Hardware
1

hi

i bought my new pc about a month ago ..
i got
i7 920
MB Asus P6T
Corsair Ram 3GB @1333
PSU Silver stone 650w
GPU EVGA 275GTX Superclock

i am having a problem that my pc restart while playing games …i check everything but dont understand what is the problem .. :frowning:
nothing is overheating everything is working on default clocks ..nothing is overclocked …
first my brother was playing Mass Effect 1 when thins start happening …i was thinking something was overheating i increased GPU Fan speed then it was fine ..
but next day i was playing Age of Empires 3 again my pc restart …then i do some cable management then everything was fine …
now it is started again after few days …
i was playing crysis first it was fine for about 3 hours then a restart ..i started crysis again but this time pc restart after 15-20 mints …
pc is restarting after 15-20 mints while playing games…
GPU max 66c @80% fan speed
CPU max 78c and AVG is 70c for all cores

2

thats pretty warm for the CPU. mine gets to about 55c while gaming, never more than 60.

3

power supply unit will most likely be the issue. I’ve had this problem myself pc would restart after 25mins either a overheating psu or gpu using to much power.