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Windows 7: 100% CPU

22 Mar 2011   #1
Tetramesh

Windows 7 Home Premium 32-bit SP1
 
 
100% CPU

Hello

Hopefully I can get some help here. A friend has given me their laptop to look at, they said it was running very sluggish. Previously when I have been asked to have a look at why someone's computer is running slow it has been easy to sort out, usually there has been a virus, malware, too many items at start-up etc.
After starting the laptop it took absolutely ages for anything to start, the sound is very distorted and when I open the Task Manager it shows the CPU at 100% and seems to stay at that usage for quite some time, there are hardly any processes running.
I've tried updating and running a full virus scan (MSE), Malwarebytes, SUPERAntispyware, Spybot - Search & Destroy, HijackThis (without changing anything), run a memory test and also ran sfc /scannow but no problems have been detected apart from a couple of ad cookies.

Below are a couple of screenshots of the Task Manager, the first showing a modest amount of processes and the second showing high CPU usage.

I've filled in the system specs for this laptop in my profile.

Does anyone have any ideas as to what the problem might be?

Thanks.




Attached Thumbnails
100% CPU-knipsel.jpg   100% CPU-knipsel1.jpg  
My System SpecsSystem Spec
.
22 Mar 2011   #2
StalkeR

Windows 10 Pro x64
 
 

Select Show processess from all users,or in your language...Processen van alle ... to see what proccess use your cpu all the time.
My System SpecsSystem Spec
22 Mar 2011   #3
cluberti

Windows 10 Pro x64
 
 

Also, this is easier troubleshot when using ResMon than task manager for inbox components, and best when using Process Explorer rather than the other two.
My System SpecsSystem Spec
.

22 Mar 2011   #4
Tetramesh

Windows 7 Home Premium 32-bit SP1
 
 

Quote   Quote: Originally Posted by StalkeR View Post
Select Show processess from all users,or in your language...Processen van alle ... to see what proccess use your cpu all the time.
Quote   Quote: Originally Posted by cluberti View Post
Also, this is easier troubleshot when using ResMon than task manager for inbox components, and best when using Process Explorer rather than the other two.
Thanks for the quick replies.
The first image is a screenshot of Process Explorer and the second from Task Manager showing all users.


Attached Thumbnails
100% CPU-knipsel3.jpg   100% CPU-knipsel2.jpg  
My System SpecsSystem Spec
22 Mar 2011   #5
StalkeR

Windows 10 Pro x64
 
 

I noticed high cpu usage from WmiPrvSe.exe. Searching over the internet found this. Take a look it,maybe it will helps you.
WmiPrvSE.exe very high CPU consumption on Windows 7 Ultimate 64bit
Also what's the second proccess on the screnshoot from Task Manager? Net Actieve.. It also use 40+% of cpu?
My System SpecsSystem Spec
22 Mar 2011   #6
cluberti

Windows 10 Pro x64
 
 

That's the idle process.
My System SpecsSystem Spec
23 Mar 2011   #7
Tetramesh

Windows 7 Home Premium 32-bit SP1
 
 

Yes, that is 'System Idle Process'.
My System SpecsSystem Spec
23 Mar 2011   #8
cluberti

Windows 10 Pro x64
 
 

ProcExp would indicate no issues, whereas task manager shows the WMI provider process consuming CPU. Do you happen to have a screenshot of procexp showing the high CPU in wmiprvse? You can also go to the properties of that process and get a breakdown of which threads are consuming CPU in the process as well.
My System SpecsSystem Spec
24 Mar 2011   #9
Tetramesh

Windows 7 Home Premium 32-bit SP1
 
 

Quote   Quote: Originally Posted by cluberti View Post
ProcExp would indicate no issues, whereas task manager shows the WMI provider process consuming CPU. Do you happen to have a screenshot of procexp showing the high CPU in wmiprvse? You can also go to the properties of that process and get a breakdown of which threads are consuming CPU in the process as well.
I took these two screenshots. Do they show what you asked for?


Attached Thumbnails
100% CPU-knipsel4.jpg   100% CPU-knipsel5.jpg  
My System SpecsSystem Spec
24 Mar 2011   #10
cluberti

Windows 10 Pro x64
 
 

The CPU time was in svchost.exe from your screenshot - it would be helpful to look at the process consuming the CPU time when it is happening. Does that make sense? No matter which process it is, get a screenshot of the process list, then double-click the process consuming the CPU and take a screenshot of the image tab, and then a third screenshot of the threads tab.
My System SpecsSystem Spec
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 100% CPU




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