How to repair .dll errors or programs not loading errors

Windows XP has the ability to protect itself from software overwriting important system files. Windows XP has a much more refined protection of these important files.... This system is called: Windows File Protection. By default, Windows File Protection is always enabled and allows Windows digitally signed files to replace existing files safely. If you introduce a file replacement in an unsafe way, Windows File protection will overwrite your file! An important part of Windows File Protection is the command line utility: System File Checker (sfc.exe) or scannow sfc. This is a great tool for troubleshooting Windows XP problems.

How to use scannow sfc..

The main reason for using this utility is when you suspect there may be a problem with a Windows XP system file. If you get .dll file error, or your program will just not load then it is worth checking for corrupt system files. To do this simply go to the Run box on the Start Menu and type in:

sfc /scannow

This will start the Windows File Protection service to scan all protected files and verify them, replacing any problem files. The following should appear and it may take some time to complete the process.

The following dialogue box might appear asking for you windows xp CD to continue. Once it is finished you will need to restart the pc.