PLS HELP!

[atheos]

i try to remove the heatsink and th
heatsink fan from the processor, when i put it back and turned it on
it only stay on for about 5 seconds, its like when i turned it on, th
fans spins but itb quickly stop after a few seconds same with th
power led, pls hel me fix the problem[/size

 

[Dreamstalker]

i try to remove the heatsink and the
heatsink fan from the processor, when i put it back and turned it on,
it only stay on for about 5 seconds, its like when i turned it on, the
fans spins but itb quickly stop after a few seconds same with the
power led, pls hel me fix the problem

Sounds as if the CPU is overheating.

Is the heatsink oriented properly and clipped down securely?

Is the attached fan plugged into the CPU_FAN header on the motherboard
(look carefully as CPU_FAN is often very close to a case fan header)?

Do you have thermal compound applied correctly? It's good practice to
remove and replace the TIM completely each time the heatsink id removed
or reseated.