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HP ProBook 450 G5 Notebook PC
Microsoft Windows 10 (64-bit)

In my a new Probook 450 G5 occassionally the "System" process starts consuming about 25% CPU and stays like this until I reboot it. I have already re-installed Windows 10 from HP's recovery image, but nothing has changed.

 

Using Microsoft's "Process Explorer" I can see that the time is spent in a thread ACPI.sys+0x21cb0.

 

I have contacted HP's support. They have checked various settings, but finally told me that the CPU usage is normal. However, this doesn't  make sense, because the notbook is sometimes runing for a long period with the "System" process consuming less of 1% most of the time.

 

Any help is highly appreciated.

 

 

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