There appears to have 4 odd-looking plastic screws attaching it
to the mobo. 3 of them seem loose. When the fan operate, the CPU
makes a funny noise and then blackout, followed by an emergency
shutdown. I just pushed it and it ''clicked'' onto place. After it
is secure, the CPU doesn't blackout and does emergency shutdowns
and operate normally.
At first when I opened the CPU cover, I was like " OKAY, WHICH
RESISTOR DROPPED OFF? " 
Vibrations...
vibration can actually unscrew ur mobo fan screws... but unless
the assembling of PC is done sloppily, it shldn't occur...
if resistor dropped off or cap blown, POST will occur...