Your IBM is keeping your PC safe or at least trying to.
when you switch on a pc the CPU gets a BIG rush of heat
and it must lose it quickly. so your fan is run at high speed for
a few seconds. If you press the power on switch 6 or 7 times
quickly it will most likely burn out the cpu destroying it
so dont do it.
over a period of time fans accumulate dust, and that soaks up
any liquids / mositure in the air. these then get cooked on the fan
and it gets heavier and stickier depending on the cleanliness
of the air. eventually a fan will sieze and need replacing.
not to mention the gaps in the heatsink getting clogged too.
usually all you have to do is remove the keyboard
and the heatsink / fan assembly is held on by up to four screws
and one tiny power cable. removing it is simple.
blowing in compressed air wont clean the heatsink properly
and wont do the fan much good either.
replace the heatsink and fan assembly
or if you can find just a fan then replace just that and clean the heatsink
Fans are generally specific to each pc make/model so you need the
exact right one.
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you wont have broke it, the motor will have seized due to dust and overheating, and lets
face it they do wear out! so the only blame you have is you kept using it when it
was overheating, and you shouldnt have.
heatsink/fans need cleaning at least every two years. thats a fact.