Take the 2-minute tour ×
Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

I use Windows XP regularly. My Task Manager shows 100% USAGE, however, all processes are at zero. Task Manager shows zero and, system idle is at zero.

share|improve this question
5  
Have you checked the box for "Show processes from all users" on the processes tab? Also, on the Performance tab, turn on Show kernel Times from the View menu. What does the red line show? –  uSlackr Jun 2 '11 at 0:49

2 Answers 2

Something is using your CPU and is hidden from Task Manager.

Scan for malware, using Malwarebytes and SuperAntiSpyware.

share|improve this answer

If no Malware, use Process Explorer as a task Manager replacement to find out what is using CPU

share|improve this answer
    
+1. You weighed in after I did. –  user3463 Aug 24 '11 at 3:40
    
I should have added it to your answer. –  Moab Aug 24 '11 at 4:14

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.