Windows 10: Windows 10 Explorer.exe takes 99% CPU usage

Discus and support Windows 10 Explorer.exe takes 99% CPU usage in Windows 10 BSOD Crashes and Debugging to solve the problem; Got this issue since last Friday When startup, windows became unbearable slow. Check the TASK manager, found that explorer.exe takes nearly 99% CPU... Discussion in 'Windows 10 BSOD Crashes and Debugging' started by ShanHua, Dec 11, 2018.

  1. ShanHua Win User

    Windows 10 Explorer.exe takes 99% CPU usage


    Got this issue since last Friday

    When startup, windows became unbearable slow.

    Check the TASK manager, found that explorer.exe takes nearly 99% CPU usage, and the memory usage kept growing, too


    Then after some time, usually 1 hour, the CPU usage drops to 0%, but the memory usage stays at 3 GB to 4GB

    Could not duplicate issue under safe mode

    Tried to disable all services and startup apps, but still no luck


    Here is the screenshot of the TASK Manager:

    Windows 10 Explorer.exe takes 99% CPU usage d7cf47e4-b8d0-4600-bb6b-f4e50240613c?upload=true.png


    Attachment is my event viewer file. Please help me to check if there is anything wrong with the computer.

    :)
     
    ShanHua, Dec 11, 2018
    #1

  2. Windows Explorer high CPU Usage in Windows 10

    Hi Andrew,

    Usually, too many background processes can boost your CPU usage. Since you already disabled the apps that are not necessary on startup,
    we suggest checking the applications running once you have successfully boot Windows 10. To do this, simply follow the steps below:

    • Click on the Start button and type Task Manager on the search box.
    • On the Task Manager window, you should see the programs running.
    • Click on the More details drop-down button to see the total number of apps running and their real-time CPU usage.

    From there, you should see what applications are running on high CPU usage. You can also
    restart the Windows Management Instrumentation service and see if your CPU performance will improve. Follow the instructions below to restart the service:

    • Click on the Start button and type Services.
    • Scroll down the list and look for Windows Management Instrumentation.
    • Right click on it and select Restart.

    Should you have further questions, please let us know.
     
    Jefferson Ore, Dec 11, 2018
    #2
  3. CPU at 99%

    Hello,

    To better assist you with your concern, we would like to ask you a few questions:

    • When you start your computer, is the CPU usage already at 99%?
    • Do you have programs on your startup items?

    Regards.
     
    Stephanie Sal, Dec 11, 2018
    #3
  4. Windows 10 Explorer.exe takes 99% CPU usage

    taskhostw.exe cpu usage 99%. FX8350

    Hello, it is not due disk usage, its due cpu usage, my disc usage is not even 5%, im dealing with cpu usage because of taskhostw.exe. that what i get when i press Win+R and type in perfmon /report. It says that my Cpu is at 99% in use. Please help me guys
     
    SauliusBalasevicius, Dec 11, 2018
    #4
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Windows 10 Explorer.exe takes 99% CPU usage

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