[Latest CPU] - - explorer.exe randomly takes up cpu usage

explorer.exe randomly takes up cpu usage
Atomic, Australia - Jun 7, 2006 Explorer.exe shoots to 99% cpu usage for no reason - i've closed everything i could think of, closed explorer and rebooted it through task manager - and as

CPU with no heatsink = instant fry?
Atomic, Australia - Jun 10, 2006 the first beep on power up,there was no heatsink on it,it was only on for about 15-20 secs,no beeps from the mobo i cut the power,will the cpu fry instantly if