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cpu usage 50% continuously


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#1 ibm8999

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Posted 16 May 2016 - 08:55 AM

Hi

My windows 7 laptop seems to be sluggish.

Eventually I noticed, using Task Manager, Performance tab, resource monitor button, that

svchost.exe, (netsvcs)

is always 50% CPU usage.

Is this normal?

 

Conditions were:

WiFi off

No connection to internet by cable or any other means.

No programs running.

No windows open, no nothing!

 

Please help me sort this one.

 

John



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#2 SleepyDude

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Posted 16 May 2016 - 09:10 AM

Hi,

 

If you don't want to connect the computer to the Internet ever disable the Windows Update service is most likely the reason of 50% CPU usage by svchost.


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#3 ibm8999

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Posted 16 May 2016 - 09:20 AM

Sorry if I caused wrong impression.

 

Yes, the computer was not connected to internet during my investigations as I thought I would eliminate any outside causes.

 

However, there is no change when it is connected to internet.

 

So, where do we go now?

 

John



#4 Willy22

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Posted 16 May 2016 - 09:28 AM

- To stop Windows Update. Open Task Manager, highlight the "Svchost" process that causes that high CPU, then right click on "Go to Services". See if the Service "Wuauserv" is highlighted & running. If so, then manually stop that Service. It then will "keep quiet" until the next computer start up.

 

- Microsoft (MS) has issued a fresh bunch of Updates last week (including a LARGE Win 10 update). That's why it can take A LOT OF time before you're able to update your system. Try it later again. (I have the same problem).


Edited by Willy22, 16 May 2016 - 09:29 AM.


#5 dc3

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Posted 16 May 2016 - 09:29 AM

Look in Processes in the task manager and see what is drawing the heavy use.


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#6 JohnC_21

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Posted 16 May 2016 - 10:15 AM

You can track down the service that is using your CPU by Opening Task Manager. Under the Performance tab press the Resource Monitor button. Click the CPU tab.

In the upper pane look for the process that is using your CPU at 50%. Check the box next to that process. In the lower pane you will see the services and CPU use of each.



#7 ibm8999

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Posted 16 May 2016 - 01:33 PM

Sorry again, I got hyjacked by a large dose of Microsoft updates, about 350MB worth.  I suppose that is to be expected, the laptop hasn't been on for about 6 weeks. By the way, I remember that back then the computer was exhibiting the same sluggishness....oh well.

 

Anyway, I thank all who have responded today.

 

After the updates had installed, I checked 'Task Manager> Performance tab>resource monitor button>svchost.exe, (netsvcs)

...(see my original post above) and CPU usage was quite low. (I don't know if any of the updates had anything to do with this).

I shall post back if this changes.

 

For clarity, it was the process

svchost.exe, (netsvcs)

that was causing 50% cpu usage.



#8 Willy22

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Posted 16 May 2016 - 01:45 PM

- Ah, but that low CPU usage is AFTER you installed the Updates.






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