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CPU pegged at 100%

Posted on 2014-10-23
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Last Modified: 2016-11-23
I have a Dell M4600 laptop with Windows 7 pro 64 bit installed. It was working fine before today and suddenly the CPU is pegged...I have installed for protection Windows Essentials / Malwarebytes Anti-Malware / CCleaner.

There are a number of programs that are consuming the CPU. explorer.exe...taskmgr.exe and others

 I need some help here to get this machine fixed...Thx.
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Question by:fdbguy
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by:Thomas Grassi
Thomas Grassi earned 250 total points
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Have you restarted the computer?  What happened then?

Run msconfig.
On services tab hide all Microsoft then disable all others
On start up tab disable all

Restart computer see if it still is pegged
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by:fdbguy
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i have restarted..couple of times...
but ill try what your taking about and do it again
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by:Thomas Grassi
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Also how much memory  does the computer have?
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by:fdbguy
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8GB of memory
and after doing what you recommended its the cpu is bouncing between 40 and 80%

Also I should mention i also did a hardware diagnostic during an earlier reboot and all checked out ok
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by:fdbguy
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the taskmgr.exe itself is consuming 25%...hmm?
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by:Thomas Grassi
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Exit taskmgr  

From. System internals  download process monitor see if that helps

Many great tools from them on the Microsoft. Site just search for it
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by:fdbguy
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ok...this process monitor is running...but not sure what to look for...the machine is still groggy
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by:Thomas Grassi
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Process monitor will show you what is using the cpu

How full is your hard drive?

Do you have a large paging file on disk? Check your system settings
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by:fdbguy
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The HD ...354gb free of 465GB
the paging file is what ever the default...last time I installed Windows i didn't alter it..
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by:fdbguy
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here is a screen shot of the paging file info
Capture.PNG
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by:Thomas Grassi
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What processes are running now
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by:fdbguy
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system idle...50%
taskmgr....25%
explorer....10-15%
carbontie...5%...but i paused it before i posted this question
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by:Thomas Grassi
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In process monitor select replace taskmgr

Taskmgr should not be running
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by:fdbguy
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im in the process monitor...but i dont know how to do that
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by:Thomas Grassi
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Go to options
Then check
Replace Task Manager

You should not see taskmgr if you do kill it
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nobus earned 250 total points
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i suggest to do a clean boot with msconfig :
run msconfig
in startup tab, click disable all
reboot and test
if the problem gone, add the disabled programs in groups or 1 by 1 till the problem is found

alternatively, in task manager, selct performance tab_ hit Resource Monitor, and select cpu to check what uses it
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Author Closing Comment

by:fdbguy
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I have turned on only the service I need and haven't narrowed down what is causing the problem but at least I'm able to use the machine now. If I figure out what service was the culprit and post here...Thx for the help!
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