

Start the restore process and let it complete (Name the restore operation something descriptive like "Defrag Repair").Ĥ. Select a restore point well before you started having problems with Disk Defragmenter Ĭ. Start - All Programs - Accessories - System Tools - System Restore (click to open) ī. Disk Defragmenter may be corrupted, needing a System Restore to correct it. (It may take a while and the PC may re-start so it can do the check at boot time. Select "Check now" to check the disk for errors.ĭ. Select "Properties" and click on the "Tools" tab.Ĭ. Open "My Computer" and right click on the drive you want to de-frag.ī. The disk is damaged and needs to be repaired. Solution: Delete unneeded files and programs till you have more than 20% free space.Ģ. The disk is too full (you need at least 15% free space, sometimes 20%). Solution: Run an Anti-Virus check and also a Spyware check.ġ.

There are several reasons why the built-in defragger may not work properly:Ġ. Can you follow the steps from this Microsoft answer and see if that resolves the problem for you:
