One of the most common reasons that defrag does not continue is that there is something running in the background. A screen saver is a very common one. Our techies recommend that you restart your computer in "safe mode" and run defrag there. That way, you can be sure all background processes are turned off. Source: CoolInterview.com
If you have the better answer, then send it to us. We will display your answer after the approval.
Rules to Post Answers in CoolInterview.com:-
There should not be any Spelling Mistakes.
There should not be any Gramatical Errors.
Answers must not contain any bad words.
Answers should not be the repeat of same answer, already approved.