Windows 10: KB5000802 - CPU Usage in Task Manager always at 100%

Discus and support KB5000802 - CPU Usage in Task Manager always at 100% in Windows 10 BSOD Crashes and Debugging to solve the problem; After install the update "KB5000802", i notice that the Windows Task Manager always shows the CPU usage at 100%, despite the system doesn't have any... Discussion in 'Windows 10 BSOD Crashes and Debugging' started by DJPRMF, Mar 30, 2021.

  1. DJPRMF Win User

    KB5000802 - CPU Usage in Task Manager always at 100%


    After install the update "KB5000802", i notice that the Windows Task Manager always shows the CPU usage at 100%, despite the system doesn't have any actual load.

    As is possible to see in the attached image, the CPU usage in task manager shows 100% and several processes with high usage, despite the Core Temp shows little to no load. Task Manager also shows all the cores at 100%, all the time.


    The processes listed are NOT using that much CPU, as stated in the Core Temp window, as the load is just fine. Appears as a bug in Task Manager.


    Is this a known bug?


    KB5000802 - CPU Usage in Task Manager always at 100% 59e4c861-51a8-4451-b020-839949dcccfa?upload=true.jpg

    :)
     
    DJPRMF, Mar 30, 2021
    #1
  2. Wuju22 Win User

    100% CPU usage in task manager after upgrading to W10

    Thank you Krishna for quick response however it is neither of those reasons. I think it is a bug, it only shows 100% cpu usage but everything works ok . Never had this issue before only started after i updated from windows 7 to 10. The procantage usage
    of cpu on some applications jumps from 5 to 70% in example : the task manager was "using" 80% of cpu and that just can't be right. Having said that i think the task manager's cpu usage shows wrong data (its bugged) somehow.
     
    Wuju22, Mar 30, 2021
    #2
  3. Task Manager High CPU Usage

    I have the same problem myself with it only happens when I scroll through task manager and open and close it. I don't know this for sure but the reason this probably happens is that you may have a lot of processes running and task manager is using a lot
    of the CPU to process the usage of each program.

    What I have done is disable data that I don't need to see like network usage and GPU usage and it drops the CPU usage a bit. I have also enabled everything and scrolled up and down on it and task manager uses almost twice as much.

    I would suggest disabling everything but CPU, disk, and RAM, (I would not suggest having GPU on because it is almost always at 99% unless you have FPS limits).
     
    Niogenesis, Mar 30, 2021
    #3
  4. Morefun01 Win User

    KB5000802 - CPU Usage in Task Manager always at 100%

    100% CPU usage in task manager

    Hello,

    I'm Dutch and my English isn't the best. So I apoligize if I spelled something wrong. Since the last few days my CPU usage is 100% when in Balanced Mode and the laptop is on battery. When plugged in my high performance mode is active and CPU usage drops
    to normal values. When in balanced mode and not plugged in my CPU usage again is 100%. Strangely when I check te performance monitor it shows low CPU usage and task manager 100%. The last image shows what happens when I plug in my laptop en system goes to
    high performance mode.

    Can somebody help?


    KB5000802 - CPU Usage in Task Manager always at 100% e0e53a36-649e-48fa-8e90-008ef2fa10a2?upload=true.jpg

    KB5000802 - CPU Usage in Task Manager always at 100% 5d2c3a6c-9def-4421-8d33-88ebd61d4da1?upload=true.jpg

    KB5000802 - CPU Usage in Task Manager always at 100% 4a53f042-cf06-4f67-a16e-2cc48a3ee1da?upload=true.jpg


    Thank you for your help,
     
    Morefun01, Mar 30, 2021
    #4
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KB5000802 - CPU Usage in Task Manager always at 100%

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