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Windows 7: Svchost using 50% CPU when idle

02 Apr 2016   #1

Windows 7 ultimate 64 bit
Svchost using 50% CPU when idle

Greetings, this is my first post so i'll try to make it proper.
I didn't know exactly where to place this topic so excuse me if i'm in the wrong section.

My name is Claudiu, i live in Romania and i'm having problems with svchost.
MY Svchost.exe is using 50%+/- CPU and 1gb+ ram when my system is idle, see the pictures.
I don't know what to do.

Attached Thumbnails
Svchost using 50% CPU when idle-1svc.png   Svchost using 50% CPU when idle-2svc.png   Svchost using 50% CPU when idle-3svc.png   Svchost using 50% CPU when idle-4svc.png  
Attached Files
File Type: txt DxDiag.txt (23.9 KB, 0 views)
My System SpecsSystem Spec
02 Apr 2016   #2

Win-7-Pro64bit 7-H-Prem-64bit

Hi and welcome to SevenForums,
Yep it's been a popular occurrence lately,
All I can say is make sure you have the latest Net framework 4.6.1 installed do it manually if not

And the most recent update client
My System SpecsSystem Spec
02 Apr 2016   #3

Windows 7 ultimate 64 bit

Thank you very much for your fast reply, i will apply your solution and post the results.
My System SpecsSystem Spec

02 Apr 2016   #4

Win-7-Pro64bit 7-H-Prem-64bit

If you're not sure how to check to see if Net framework 4.6.1 is installed already it will be listed in Uninstall a program if it is along with which ever version is installed.
My System SpecsSystem Spec
02 Apr 2016   #5

Windows 7 ultimate 64 bit

At this point i'm thinking to reinstall windows, something "invisible" is eating CPU and RAM, i can't detect it.

I installed that version of .net framework but i couldn't get the windows update to work.

Attached Thumbnails
Svchost using 50% CPU when idle-a12.png   Svchost using 50% CPU when idle-a13.png  
My System SpecsSystem Spec
02 Apr 2016   #6

Win-7-Pro64bit 7-H-Prem-64bit

Well if you do clean install there is a sort of convoluted process to follow otherwise you won't be any better off than now
Before you start download KB3083710 and KB3102810 in advance, and store them on a flash drive
Start and complete the install without an internet connection
Immediately after install is complete
Manually install KB3083710 and restart.
Manually install KB3102810 and restart.
Change your windows update settings I used Check for updates but let me decide when to download and install
Unchecked Give me recommended updates the same....

Restore the Internet connection and Activate windows
Then launch Windows Update search
After about 5-10 minutes you should have plenty of updates to download and install.

Another thing is if you see this update make sure it is not installed with any other updates
It needs to be installed all by it's self
It was not uncheck automatically which caused many others to fail to install
My System SpecsSystem Spec
02 Apr 2016   #7

Windows 7 ultimate 64 bit

i will keep that in mind :) thanks again :)
Keep this topic open in case i do find a solution, i will post it here.

Reinstall is the easy way out but i won't have any satisfaction if i don't find the cause of the problem and the solution.
My System SpecsSystem Spec
02 Apr 2016   #8

Win-7-Pro64bit 7-H-Prem-64bit

Yea I had the same thing happening on a dual core 32 bit laptop with the high cpu usage came high temperatures
I had no choice
I had a spare ssd same size and just did it = dang if it didn't solve the problem :)

I believe it's a corrupt updates store
Run sfc /scannow three times in a row restarting between each rerun
Click Start and type in the search box
Right click the suggestion on the top and run as administrator
Then type
sfc /scannow
Then the enter key.
Yes there is a space between the c /
When the scan is done type
Restart the machine and repeat 2 more times.

Then if you feel up to it as a last resort before a clean install :)
Use winkey+R
Type in the Run box,
Windows logs on the left column and expanded them and right click and click on clear on the 4 entries below,
Exit and restart the machine again

Make sure the services are running and hurry up and wait

Then click Start and type in the search box
Click the suggestion or the enter key
Make sure these services are running and on automatic or delayed start.
Double click the listings to get the options to change them.
Background intelligent transfer services
Windows installer
Windows update
My System SpecsSystem Spec
02 Apr 2016   #9

Win-7-Pro64bit 7-H-Prem-64bit

You could also let Brink do it for you
This does about the same thing
Windows Update - Reset
My System SpecsSystem Spec
02 Apr 2016   #10

Microsoft Windows 7 Home Premium 64-bit 7601 Multiprocessor Free Service Pack 1

Also maybe check the posts here and the links mentioned:

Windows Update checking for updates forever

As for Brink's script also read here:

Windows 7 Updates Searching for updates Forever

ThrashZone's point about "no inteternet connection" is a good one. Personally I have found that it's the windows update check that is the problem. It's better after applying fixes to:

Not allow any connection unless you have disabled Windows Update Service.

Once disabled reboot and connect if you want to.

Wait 24 hours (until after the next scheduled update check) before re-enabling Windows Update Service then re-apply Windows Update setings. Contrlo Panel> Windows Update> Change Settings.

Configure to notify but not download.

Reboot then run an update check. The first one may take a long time as the system is re-scanned. It might take hours.

Subsequent checks should work faster.
My System SpecsSystem Spec

 Svchost using 50% CPU when idle

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