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If you cannot defrag your hard disk, do a full malware scan using a recommended anti-virus and anti-spyware program like Trend Micro, Kaspersky, Auslogics Anti-Malware or Malwarebytes. It can cause problems seemingly unrelated to its activities. Check that the percentage of free space indicated is at least 15% – preferably 20%. Make sure you have at least 15% of the space on your hard disk free by going to Computer or My Computer, right clicking the icon for your hard disk and going to Properties. You will usually get a separate defrag error if you don’t have enough free space to defragment. Check that you have enough free space to defragment If your disk defragmenter can run in Safe Mode, this provides additional information to help diagnose what the problem is with a normal Windows start. Restart your computer and press F8 repeatedly after the boot screen to start Windows in Safe Mode. If No paging file is selected, try de-selecting it and seeing if that fixes your defrag error. Click the Advanced tab again, and look for the Change button under Virtual Memory.
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Go to Control Panel -> System -> Advanced tab and click Settings under Performance.
Why cant i defrag my computer on vista how to#
Of course, if you can determine which program is causing the problem, you will still need to decide how to take action to fix the defrag error if you want to keep the program installed.
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If you still cannot defrag after all is done, try returning the system to an earlier time. Select the most recent restore point in the System Restore list and click Next. To do this, run System Restore – log on to Windows as Administrator and go to: Start -> All Programs -> Accessories -> System Tools -> System Restore. To find out if this is the case, roll back your system to the state it was before the change.