Hello. I am trying to defrag my computer but I am finding that it won't let me. What happens is that I will do a scandisk and then a defrag but about 10% through the defrag it stops and tells me that windows cannot access part of this drive. To then click help and carry out the instructions for running scandisk. Using the Thorough Option I will do the scandisk again but then when I go to the defrag part again I am told the same thing. What could be the problem? Thank you for any help you can give me Myra Stewart Myra, First try shutting down all applications prior to running defrag. If necessary run task manager (Ctrl+Alt+Del) and shut down all but exlporer and systray. If you are still uable to complete defrag, go to your hard drive manufactures web site and down load and run the disk diagnostic utility for your drive. Good Luck Joe The NOSPIN Group is now offering Free PC Tech support at our newest website: http://freepctech.com