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Windows 7: Mysterious CPU usage

28 Mar 2013   #1
bradg

Windows 7 Professional, Service Pack 1, 32-bit
 
 
Mysterious CPU usage

When I get offline and stop all activity on my computer, memory usage goes down, but CPU usage goes up. Why is that?


My System SpecsSystem Spec
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28 Mar 2013   #2
Indianatone

Windows 7 x64 Ultimate and numerous virtual machines
 
 

Hi bradg and Welcome to Seven Forums.
Could be lots of reasons mainly harmless. Your antivirus maybe scanning, the drive might be defragging as you are "idle". How high does it go? 25 to 30% can be normal if the computer is "housekeeping" but if it contunues for hours you may have a virus or malware or a program running in the background that you are unaware off.
Post a screen shot of your task manger screen and we'll take a look.
My System SpecsSystem Spec
28 Mar 2013   #3
x BlueRobot

 

Please also attach a msinfo32 file, just to check which programs are booting at Startup.

Start > Type: msinfo32 > File, Save

Once you saved the file, then you will need to follow these instructions to upload the file in your post:
Note   Note
msinfo32 will not contain any personal information or product keys.
My System SpecsSystem Spec
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28 Mar 2013   #4
bradg

Windows 7 Professional, Service Pack 1, 32-bit
 
 
Mysterious CPU usage

Many thanks. It's moderate usage, up from the 10% range to the 40% range, and it soon calms down, so I'm not complaining, just curious.


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My System SpecsSystem Spec
28 Mar 2013   #5
Indianatone

Windows 7 x64 Ultimate and numerous virtual machines
 
 

Nothing looks wrong to me. Your PC is just housekeeping. When you are not using it it will do tasks and use the CPU to carry them out. This can happen after updates or closing programs. To improve performance you might want to add some memory so you have a total of 4GB ram.
My System SpecsSystem Spec
28 Mar 2013   #6
bradg

Windows 7 Professional, Service Pack 1, 32-bit
 
 

Thank you!
My System SpecsSystem Spec
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 Mysterious CPU usage




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