The System File Checker is a built-in function for Windows XP that allows the system to go thru and check all major protected Windows XP system files against the original versions stored on a valid XP CD. This is extremely handy if there is any suspicion of any corrupted system files that are leading to unusual Windows behavior.
The procedure is access the System File Checker is as follows:
- Start -> Run -> type ‘SFC /scannow’ without any quotes and then press enter
- The System File Checker will then go thru all you impt. System files and make sure that they have not been altered in any way.
- If any major system files are corrupted or are altered in any way, they are replaced with the original ones from your \Windows\System32\Dllcache\ directory and\or your Windows XP CD.
- You may be prompted to boot if necessary.
Note that you can use switch /scanonce to scan after the next reboot or /scanboot to scan on every reboot instead too. Also if you choose /scanboot and then want to stop a scan after every reboot at some point, use the /revert switch.
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