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Windows 7: svchost.exe taking CPU to 100%

26 Jan 2016   #11
nithig

Windows 7 Pro 64bit SP1
 
 

Thanks again.
Relieved to read that leaving system on sleep ought not be a problem ... it is v. convenient.

So I'm back to square one ... have re-installed from the link UsernameIssues gave in first reply and now the Win. Standalone Installer is searching for updates ... I'll just leave it running and wait for it to eventually find what it requires.
I'll let you know what happens.


My System SpecsSystem Spec
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26 Jan 2016   #12
UsernameIssues

W7 Pro SP1 64bit
 
 

Quote   Quote: Originally Posted by nithig View Post
Thanks again.
Relieved to read that leaving system on sleep ought not be a problem ... it is v. convenient.

So I'm back to square one ... have re-installed from the link UsernameIssues gave in first reply and now the Win. Standalone Installer is searching for updates ... I'll just leave it running and wait for it to eventually find what it requires.
I'll let you know what happens.
It will be interesting to see if the installation process finds anything when you leave it searching - perhaps overnight. If it does not continue with the installation, cancel the install via a cancel button (if available) or by restarting the computer. Then do these steps: Windows Update - Reset
My System SpecsSystem Spec
26 Jan 2016   #13
nithig

Windows 7 Pro 64bit SP1
 
 

It's now been running for about 3 & half hours and as you suggest 'perhaps overnight' I'll let it run during today and if that fails I''ll return to the steps you've kindly provided. Appreciate your imput UsernameIssues.
My System SpecsSystem Spec
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26 Jan 2016   #14
nithig

Windows 7 Pro 64bit SP1
 
 

After just over 5 hrs (mind you I have lousy i'net speeds here) KB3112343 was found and installed. Upon restart it doesn't appear to have solved the over taxing of CPU and curiously TrustedInstaller.exe is taking up to 50 on CPU reading in Resource Monitor and for now svchost seems to have quietened. Have to leave the computer so will leave a scan running and check again later.
If still high will continue to Win Update Reset as linked above.
My System SpecsSystem Spec
26 Jan 2016   #15
ComputerGeek

Desk 1: Win 7 Pro x32; Desk 2: Windows 10 x64
 
 

The problem may well be with windows update but IMHO I don't believe that KB is relevant in this case.

The user is running a standalone Windows 7 machine. As I read the KB info, that KB is for Windows 7 running in a Windows Server environment. (might also be why the KB hangs if it's looking for a server or server client running on the workstation - neither of which are there)

@nithig
Can't hurt to run the MS Fixit for Windows Update first.

Don't know if it will help, but I'd try to see what service(s) are using that CPU. Your screenshot indicates the service group for the problem svchost is netsvcs. Go into Resource Manager and click CPU tab. Look in the Services section. Click on Group column header to sort by Group. Now you can scroll down to see all the services in the netsvcs group. Which of the netsvcs services are hogging the CPU? Take a screen shot

/* EDIT */
And question: Does the machine run high CPU right after or soon after reboot? Or does it take awhile? just curious...
My System SpecsSystem Spec
26 Jan 2016   #16
nithig

Windows 7 Pro 64bit SP1
 
 

Hello ComputerGeek,
here's what you directed me to: (and btw scvhost.exe (netscvs) is back up ...running high)
_____________________________
have run the MS Fixit and now it's back to "Detecting Problems: -checking for updates online"


Attached Thumbnails
svchost.exe taking CPU to 100%-capture1.jpg   svchost.exe taking CPU to 100%-capture.jpg  
My System SpecsSystem Spec
27 Jan 2016   #17
nithig

Windows 7 Pro 64bit SP1
 
 

""Detecting Problems: -checking for updates online" ran for hours with no result.
Then I took the step Update Reset from link above.
After restart there is no change... scvhost.exe (netscvs) is still taking up average of 50% CPU.

Also despite ceasing all Update checks and restarting the update process wuauserv continues to run at about 50% of CPU.

I've followed all directions provided so far.
This is a recent development ... and since I've added no new programs or activities it's a mystery what started this CPU and overheating problem.
Any further analysis welcome.


Attached Images
svchost.exe taking CPU to 100%-capture.jpg 
My System SpecsSystem Spec
27 Jan 2016   #18
UsernameIssues

W7 Pro SP1 64bit
 
 

Quote   Quote: Originally Posted by ComputerGeek View Post
The problem may well be with windows update but IMHO I don't believe that KB is relevant in this case.

The user is running a standalone Windows 7 machine. As I read the KB info, that KB is for Windows 7 running in a Windows Server environment. (might also be why the KB hangs if it's looking for a server or server client running on the workstation - neither of which are there)

@nithig
Can't hurt to run the MS Fixit for Windows Update first.

Don't know if it will help, but I'd try to see what service(s) are using that CPU. Your screenshot indicates the service group for the problem svchost is netsvcs. Go into Resource Manager and click CPU tab. Look in the Services section. Click on Group column header to sort by Group. Now you can scroll down to see all the services in the netsvcs group. Which of the netsvcs services are hogging the CPU? Take a screen shot

/* EDIT */
And question: Does the machine run high CPU right after or soon after reboot? Or does it take awhile? just curious...
Yes, several of the patches to the Windows Update Client (WUC) mention problems interacting with SCCM tools; however, several forum members have had RAM and CPU usage reduced just as soon as they apply the latest WUC. Updating the WUC probably fails to fix much on computers where some other part of Windows Update is messed up (e.g. the main database).
My System SpecsSystem Spec
27 Jan 2016   #19
UsernameIssues

W7 Pro SP1 64bit
 
 

nithig,
Did you run the batch file (Reset_Windows_Update_Full.bat) from option three in the WU reset tut?


I would play with Process Monitor to see what the WU process is doing to consume all of those CPU cycles... but let's see what ComputerGeek can think of to try next - since Process Monitor can be a bit overwhelming.
My System SpecsSystem Spec
27 Jan 2016   #20
ComputerGeek

Desk 1: Win 7 Pro x32; Desk 2: Windows 10 x64
 
 

The good news is we now know with certainty that Windows Update is the sole culprit - not malware (which can also cause high CPU in the svchost netsvcs group). The bad news is: it's not malware - malware can sometimes be easier to find and remove

Do you use or need HomeGroups in Windows 7? It's the only Win7 feature that needs ipv6 to work

Try disabling ipv6. Here's a simple one click method to disable / re-enable it. How to disable IPv6 or its components in Windows. Reboot. Anything different?
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