CPU usage history

Question

for over a week now, my CPU usage history is maxed out at 100%. its making my puter inefficient. i only have 48 processes running, and no applications. ive disk defragmented and cleaned up the hard drive, but i dont know why the usage is still showing 100%. could anyone help me fix this?

im talkin about "windows task manager"- "performance"- "CPU Usage" (i have an inspiron 5150)

ejn63 · Answer

Assuming you're up to date on Windows critical updates, antivirus and antispyware, clear the dust from the heatsink. This model is well known for being able to do double-duty as a toaster, as it overheats readily.

langston.4 · Answer

how do i clean the heatsink? take off the back and clean it by hand?

rwm32 · Answer

Here are some instructions on cleaning the radiator grille:

http://forums.us.dell.com/supportforums/board/message?board.id=insp_general&message.id=184349

This is a good thing to do anyway -- but it won't fix your CPU 100% problem. In Task Manager, go into the Processes tab, then scroll until you find which process is using so much of your CPU time. Post back here with details of it.

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CPU usage history

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