I have: AMD Phenom II X2 550 Gigabyte ga-ma74gmt-S2h MAINBOARD 2x2gb DDR3 1333 ram MSI 450GTs Cyclone OC Normal 450 watt PSU
My NB temp is constantly stable at 77C. And when i'm running any game it's reached to 90+C, and my PC takes a reboot.
WHAT to do....i've 4 fan installed already. PLEASE HELP....................
How's your CPU Temp? Make sure you have thermal paste between the CPU and the Heatsink. If CPU temp is low and "case" temp is high - it could be a faulty reading - check with your hand to see if there is high ambient temp somewhere inside.
Can remove and re-seat the heat sink .... but before that, I'd try one of these: