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Windows 7: explorer.exe high CPU usage - tried everything I can think of

07 Sep 2011   #1
nothsa

Windows 7 Professional x64
 
 
explorer.exe high CPU usage - tried everything I can think of

Hi,

My explorer.exe is constantly using 30-45% of my 4-core CPU. I have determined after MUCH testing that the cause is likely not a virus / malware / rootkit. I have also:
  • tested booting into safe mode (explorer.exe is fine in safe mode)
  • done a "clean boot" by using msconfig to disable all startup processes and non-microsoft services (explorer.exe still uses 30-45% CPU on clean boot).
  • run "sfc /VERIFYONLY" from an administration command prompt (sfc reported that everything was fine)
I've been trying to figure this problem out for over 2 weeks now. Does anyone have any suggestions? I'm willing to try almost anything at this point.


My System SpecsSystem Spec
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08 Sep 2011   #2
nothsa

Windows 7 Professional x64
 
 

I tracked down the issue to a shortcut on the desktop that wasn't displaying its icon (Finally! After two weeks!). This was apparently causing explorer.exe to go into a loop, consuming a lot of processing power ( terrible programming =P ).

To fix it, I right-clicked on it and selected "Properties > Change Icon" and selected an icon from another file at random.
My System SpecsSystem Spec
08 Sep 2011   #3
paulpicks21

Windows 7 Professional 64 bit
 
 

Welcome to Seven forums nothsa.

Sorry nobody managed to help you, but glad you got it sorted and thanks for letting us know


Cheers

Paul.
My System SpecsSystem Spec
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22 Oct 2012   #4
albanyguy

win 7 x64
 
 

HI
Had the same issue with a icon on Desktop killing CPU.. not happy Bill!!
Thanx Notsha saved my a@# buddy...
My System SpecsSystem Spec
01 Nov 2012   #5
limbik

Windows 7 Ultimate x64
 
 

Do you mind to tell how to change the icon? Cause when I go to properties of explorer.exe it won't show any option to change it.
My System SpecsSystem Spec
22 Jan 2013   #6
PCFreakBavaria

Windows 8 Pro 64bit
 
 
For Links consuming CPU try this tool.

My System SpecsSystem Spec
11 Feb 2013   #7
IronAnimal

Windows 7 Ultimate x64
 
 

The icon clean up solution worked for me also.
My System SpecsSystem Spec
24 Mar 2013   #8
Jow Bloe

Win 7 64 bit
 
 

Mind telling us how you made that diagnosis?
My System SpecsSystem Spec
22 Jul 2013   #9
pcbiohazard

windows 7 32bit
 
 

hi I'm having same problem i did what nothsa did but its still bouncing around when i start up task manager using 22k of memory and did the change icon but its still did nothing i think im having a slightly different problem. can anybody offer a suggestion. thanks
My System SpecsSystem Spec
04 Aug 2013   #10
bthomas878

Windows 7 Professional 64 Bit
 
 

Quote   Quote: Originally Posted by pcbiohazard View Post
hi I'm having same problem i did what nothsa did but its still bouncing around when i start up task manager using 22k of memory and did the change icon but its still did nothing i think im having a slightly different problem. can anybody offer a suggestion. thanks

One program you can try that is a free and works a lot better for diagnosis for issues such as this is called Process Hacker. It is a more in depth program than Task Manager and when installed can be set to be the default when you call up Task Manager. I will allow you to right click on the process and get a lot of information on that process, you can get general file info including the file name and location, you can get the individual threads and % of CPU each sub thread is using. You can also get info on memory usage and addresses, what environmental variables it uses and their paths, statistics on usage and many more just from the properties. You can also get info on Disk usage and more detailed memory usage info in addition to open network connections.

Hope this helps with the diagnosis.
My System SpecsSystem Spec
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 explorer.exe high CPU usage - tried everything I can think of




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