If you have had a virus/trojan infection or your PC is having general issues you can run system file checker.
You will need a windows SP2/SP3 cd or Vista dvd.

Place your Windows disk in the drive.
open a command prompt.
type in sfc /scannow (there is a space between sfc and /)
windows will check for the integrity of Microsoft system files.

အျပည္႔စံုသိခ်င္၇င္

Code:

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Vista မွာေတာ့မစမ္းဖူးေသးဘူး။ XP မွာစမ္းၾကည့္တာ ေတာ္ေတာ္အဆင္ေျပတယ္။
အကုန္လံုးကို သူ႕ဘာသာသူ ျပင္ေပးသြားတာ။