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ntoskrnl.exe high CPU usage


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#1 Tony3570

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Posted 01 February 2018 - 06:11 PM

Hi, I downloaded and ran for the first time Booster Driver 5 to update few drivers.

Right after the program downloaded and installed those drivers my laptop became super slow.

Running task manager I'm seeing  ntoskrnl.exe consuming up to 50% of the CPU (pls. see attached screenshot.

I disinstalled Booster Driver, but the issue persists. I ran Tweaking Windows Repair, Malaware byte, Adwcleaner but couldn't solve the issue.

I tried with a clean boot but nothing happened.

 

Can you pls. advice?

Many thanks in advance



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#2 bwv848

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Posted 01 February 2018 - 09:23 PM

Do you have a System Restore point prior to the updating of your drivers? If so, use it! If not, download and run Process Explorer (https://live.sysinternals.com/procexp64.exe) with admin privileges. Right click on the "System" process (ntoskrnl.exe, the kernel image) and select "Properties." Head over to the "Threads" tab and sort them by CPU usage by clicking on the "CPU" column. You should be able to figure out the culprit driver(s) from there.


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#3 Tony3570

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Posted 02 February 2018 - 07:24 AM

Many thanks bwv848!!!

It was an AMD driver (atikmdag.sys) creating the issue. I managed to reinstall a former version, and the issue has been resolved.

 

Thanks again!


Edited by Tony3570, 02 February 2018 - 07:24 AM.


#4 bwv848

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Posted 02 February 2018 - 11:47 AM

You're welcome! These pesky graphics drivers... :angry:


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