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SVCHOST.EXE 100% disk activity

Posted on 2016-09-30
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Last Modified: 2016-11-09
I have a computer loaded with WIndows 7 64bit. Today they complaining about programs not responding.   I noticed that the Disk activity was steady at 100% being caused by svchost.exe (locasystemnetworkrestricted).  I've ended the process tree but when certain programs are loaded example: Office.  that process restarts and the disk activity goes back to 100% and makes the computer unusable.

I ran a diag on HD and it passed.

I uninstalled AV (Symantec) and problem still exists.

any ideas?
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Question by:Goraps
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11 Comments
 
LVL 22

Accepted Solution

by:
Adam Leinss earned 1000 total points (awarded by participants)
ID: 41823654
If you run Process Explorer by Sysinternals, that will allow you to "drill" into the svchost.exe process to see what it is hosting.  Now, it could be hosting 15 different things or just one, but at least it will narrow down what is running from under it.
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Author Comment

by:Goraps
ID: 41823873
Shows alot of svchost.exe  but nothing you can drill down into.
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LVL 22

Expert Comment

by:Adam Leinss
ID: 41838508
Goraps, hopefully you were able to review the steps before the moderator removed them.  If not, please respond.
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LVL 16

Assisted Solution

by:rbudj
rbudj earned 500 total points (awarded by participants)
ID: 41838987
I've had a lot of issues like this lately. Turn off windows update and test.
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LVL 70

Expert Comment

by:Merete
ID: 41839497
Since it appears to Office on local system network restricted
Service Host: Local Service (Network Restricted) contains a lot of  sub-services, and one of these sub-services is causing Service Host: Local Service (Network Restricted) to use CPU to its maximum.

This service is called Superfetch and it’s used to pre-load data from hard disk into RAM memory.
To  improve your performance, and get rid of the high CPU usage, you have to disable Superfetch service,
Run services.msc to open the Services Manager.
Scroll down to Superfetch service,
Double-click on it to open it Properties box. Click on Stop to stop the process.
There's an article here with pictures
Disable Superfetch & Prefetch for SSD in Windows 8 / 7
http://www.thewindowsclub.com/disable-superfetch-prefetch-ssd
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Author Comment

by:Goraps
ID: 41852473
@Merete  Your suggestion didn't help issue with 100% Active time constant on system.
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LVL 70

Expert Comment

by:Merete
ID: 41853108
agree with rbudj suggestion turn off windows updates.,
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Author Comment

by:Goraps
ID: 41853857
Windows updates are turned off via a GPO because we use a patch management system (Shavlik)
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LVL 70

Assisted Solution

by:Merete
Merete earned 500 total points (awarded by participants)
ID: 41853931
When I look in my task manager processes  I have no svchost.exe tasks running on a networked system. windows 7 x64 professional.
Related to Office?
As it is disc activity a couple of things you look at
extremely high HDD usage is MS Windows Defender,Check in control panel that it is turned off.
change the power plan from 'Balanced' to 'High performance"
Have you rebooted?
Run a check disc at the next boot.
Did you use the  (Symantec) removal tool what AV is on there now?
CleanWipe utility.
There is a small tool that runs on windows 7 as well as older systems called Svchost Viewer,
It shows exactly what each svchost.exe Instance is Doing.
it requires no installation and can run directly off a USB pen drive
Give it a try
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LVL 70

Expert Comment

by:Merete
ID: 41880190
Without the author's assistance these experts answers are the best and highly likely would have resolved it based on experience.
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