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High CPU usage Rate Topic: -----

#1 User is offline   ehrenben 

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Posted 19 July 2009 - 11:58 PM

Hi,
I am using Windows XP + SP2. Every few hours everything slows down and Task Manager shows almost 100% CPU usage. Most of it (more than 80%) is taken up by SYSTEM (not System Idle Process), and it cannot be stopped. When it happens, the computer cannot be turned off, unless I press the OFF button. I have Norton Antvirus ver. 11 and have run an updated version of Spybot. I also clean the registry with CCleaner and Glary Utilities. I tend to believe that the problem occurs only when Windows Internet Explorer is running. I have restored IE8 to IE6, but it didn't help.
Does any one have a clue to what is happening?
Thanks,
Ben

#2 User is offline   CoffeeFiend 

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Posted 20 July 2009 - 12:06 AM

Use process explorer instead of the task manager. You'll see what's causing this.

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