Windows 10 High CPU usage of System process when idle

  • Thread starter Thread starter 永刚李1
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永刚李1

The System process uses amost a whole thread of CPU after PC is idle for a few minutes, and stops using CPU as far as I do something such as moving mouse or pressing keyboards.

I tried to see the CPU usage per thread of System process by using a process explorer running in admin, pressing enter to call the "properties" window after System process began to use CPU, then trying to see threads' cpu usage result. The result was almost the same each time I do this:





My windows 10 version is Windows 10 1909 18363.1016


My PC has an aggressive fan control settings and System process using too much CPU when idle is causing my fan making noises. I want to know if this high CPU usage for System process is an expected behavior or not. If it's expected, is there any way to control such behavior; if it's not, what can I do to investigate this issue.

Thanks in advance

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