Hi guys! I'm new to the forum and I was reading some threads and seems like a very useful community here. I am a graduate student and recently my computer has been very "laggy" and when I go to Windows Task Manager I see that CPU Usage is fluctuating from 10-100%. I really am not sure how to diagnose the problem.
I have scanned for viruses through Norton Antivirus and the hard drive appears to be clean. I have tried "defragging" the computer and this does not help either. I am a relative novice so please help me fix my problem as it is becoming very annoying to use my computer. Thanks for your ears and hope someone can help out.