Windows 10: CPU Usage 100% until Task Manager is opened

Discus and support CPU Usage 100% until Task Manager is opened in Windows 10 Software and Apps to solve the problem; Hi,I have a i9-9900k 32gb Windows Pro 21H2 19044.1586 desktop that randomly starts freezing up. As soon as I hit task manager, I can see the CPU is... Discussion in 'Windows 10 Software and Apps' started by CosminCojocea, Apr 13, 2022.

  1. COSMINCOJOCEA
    CosminCojocea Win User

    CPU Usage 100% until Task Manager is opened


    Hi,I have a i9-9900k 32gb Windows Pro 21H2 19044.1586 desktop that randomly starts freezing up. As soon as I hit task manager, I can see the CPU is 100% for a second after opening, after which it goes down to normal levels and I can use my PC normally.I have searched for answers and found thread https://answers.microsoft.com/en-us/windows/forum/all/cpu-usage-high-until-i-open-task-manager/de5db312-42f3-4884-ba0b-f10db8692804 but that's from 2015 and it's now closed. I have tried the solution listed there and on the last step I'm getting access conflicts due to files being in use. What els

    :)
     
    CosminCojocea, Apr 13, 2022
    #1
  2. NELKAAPEKAA
    nelkaapekaa Win User

    Cpu usage high until I open task manager

    So, whenever I open my task manager CPU usage is at 100% and thing that takes up 100% is something called " system interrupts ", but its only when I open the task manager, so when my task manager is closed my CPU usage is at 100% at all the times? Do
    I need to keep my task manager open to play games?...
     
    nelkaapekaa, Apr 13, 2022
    #2
  3. WARPSTAR22
    Warpstar22 Win User
    CPU at 100% that goes away when opening Task Manager

    Thanks for your answer @Jay#222. I understand that a computer is doing a lot in the background. In that case above, I was using Adobe Lightroom which is heavy on the CPU but I might get this when I'm just using Google Chrome googling things. Its weird to
    me because upon opening the Task Manager, my CPU calms down when it might have been working hard for quite some time. My CPU might be working hard for 10 minutes and then upon opening Task Manager, it calms down. I'm sure if it listed the CPU usage prior to
    opening the Task Manager, it would be 90%-100% usage all prior. Is it something like the Task Manager flushes processes and that's why it drop significantly? And I mean it drops to the point where the fan will calm down and my laptop will not lag much.
     
    Warpstar22, Apr 13, 2022
    #3
  4. SIONIRELAND
    sionireland Win User

    CPU Usage 100% until Task Manager is opened

    high cpu usage when task manager is open

    i am having issues with cpu usage when i bring up the task manger it shows that cpu usage is 59% with the task manager app using up 30-40% cpu usage in the performance tab it show that my cpu usage is at 80% usage but when using other programs to check
    my temps and cpu load etc is shows low 20s when gaming this can pin the cpu up at 100% in task manger
     
    sionireland, Apr 13, 2022
    #4
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CPU Usage 100% until Task Manager is opened

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