1.    08 Nov 2017 #1
    Join Date : Aug 2017
    Posts : 40
    Windows 10

    Desktop Window Manager using high CPU


    For the past couple hours or so the fan has been running higher than usual on my computer. I went into Task Manager to check and found Desktop Window Manager consistently using >20% CPU. This happened an hour or two ago, and just started happening again a little while ago. Why did this happen? What can I do to fix it?
      My ComputerSystem Spec
  2.    1 Week Ago #2
    Join Date : Aug 2017
    Posts : 40
    Windows 10
    Thread Starter

    I have determined the problem to be something related to the Calculator being open, because the Desktop Window Manager uses more CPU power with the calculator open than when it is closed. I just had the calculator open and the Desktop Window Manager hit 25% CPU.
      My ComputerSystem Spec
  3.    1 Week Ago #3
    Join Date : Feb 2016
    Maribor, Slovenia
    Posts : 10,052
    Windows 10 (Pro and Insider Pro)

    Quote Originally Posted by allam447635 View Post
    I have determined the problem to be something related to the Calculator being open, because the Desktop Window Manager uses more CPU power with the calculator open than when it is closed. I just had the calculator open and the Desktop Window Manager hit 25% CPU.
    Shouldn't happen. Even with very old processor. Does this happen with other apps too?

    Check you graphic drivers.
    Run Malwarebytes and ADWcleaner, just to be sure no malware is present.
      My ComputerSystem Spec
  4.    1 Week Ago #4
    Join Date : Aug 2017
    Posts : 40
    Windows 10
    Thread Starter

    Quote Originally Posted by AndreTen View Post
    Shouldn't happen. Even with very old processor. Does this happen with other apps too?

    Check you graphic drivers.
    Run Malwarebytes and ADWcleaner, just to be sure no malware is present.
    Only the Calculator seems to be causing it.
      My ComputerSystem Spec
  5.    1 Week Ago #5
    Join Date : Feb 2016
    Maribor, Slovenia
    Posts : 10,052
    Windows 10 (Pro and Insider Pro)

    Quote Originally Posted by allam447635 View Post
    Only the Calculator seems to be causing it.
    If Malwarebytes scan comes out clean (assuming this is MS calculator), go to settings, apps, find calculator and click (under its name) Advanced options. On the next screen click on reset. Not sure if this will do any good, but (I would) try it out.


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