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it happens when the your system (PC) is:

1. kept in a room from where the dust particles comes in max which results the CRT monitor in the stage of not showing nothing on the screen.

with TFT & LCD's it doesn't happen

2. or it may be a wind/air means when you have kept your system near a window from where the air comes in & out

so when these particles comes inside your system's cabinet it attacks first the CPU through which the speed of rotating decreases and makes a noise during running........

so keep your system clean dust free.

that's why the computer shop tells you to purchase a dust cover for your CPU (cabinet)

but also take this precaution that:

while switching your PC remove the dust cover so as the Temperature inside may not be too hot........

to survive...

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13y ago

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