Glad you found one you can use.

One thing to try with a system that has issues is to run sfc /scannow in your cmd prompt as administrator to see if you’ve got any windows system files that are corrupted or not in original configurations. Scan will take some time, allow the scan to finish and complete. Do not use the system for anything else whilst this program is running. It should report that fixes were attempted and repairs were successful or it was unable to fix any issues it found; on a clean system it will report no issues whatsoever.

XP will need the system installation disk in the CD/DVD drive to run sfc /scannow. Vista/Win 7/Win 8 do not need a CD to do the sfc scan. Note that there is a space between sfc and …/scannow.