Windows 10: Very high CPU usage (processes not adding up)

  1.    2 Weeks Ago #1

    Very high CPU usage (processes not adding up)


    This morning, I was playing Minecraft, and I noticed my computer fan suddenly getting higher in pitch. I went into Task Manager and noticed that the CPU usage was always above 70%, but there were no processes using more than 10% (Normally the game uses about 30-40%, but I had to pause to check). I knew something was off because the game was the only process using more than 10% CPU, and there were surely less than 10 processes in the 3-10% range. This persisted even after I closed the game. When I looked at the task manager graph, it looked like there were two graphs, one showing the actual CPU usage, and the other not accounting for the mysterious usage. I also noticed my CPU speed was exceeding 3 GHz even though it says the maximum speed is 2.5 GHz (not sure if that's related but it might be).

    I tried putting the computer to sleep and waking it up again but I knew this didn't work because the fan was making a racket the second I woke the computer up. I noticed that this had lowered the mysterious usage, but did not get rid of it. Rebooting my computer fixed it.
      My ComputerSystem Spec


  2. Posts : 3,082
    10.4 Home 1709 x64
       1 Week Ago #2

    You might be infected with coinminer malware. Download Process Hacker, run Minecraft, then close it.
    Open Process Hacker, doublick the process, open Threads, sort it by CPU to see, what is taking CPU.
    Attached Thumbnails Attached Thumbnails capture_02062018_105008.jpg  
      My ComputerSystem Spec

  3.    1 Week Ago #3

    TairikuOkami said: View Post
    You might be infected with coinminer malware. Download Process Hacker, run Minecraft, then close it.
    Open Process Hacker, doublick the process, open Threads, sort it by CPU to see, what is taking CPU.
    This doesn't happen every time I play, and yesterday was actually the first time I remember this happening. Again, rebooting got rid of the mysterious usage, and every time I checked the Task Manager while playing since then, it hasn't happened, so I don't think it's malware.
    Last edited by allam447635; 1 Week Ago at 12:53.
      My ComputerSystem Spec


 

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