If you are still hanging onto Windows 10 and resisting the upgrade for as long as you can, then this is how you find the power plan option. Go to your computer Settings, and then click System. There's ...

The above instructions only apply to Windows 11 if you want to change the timeout settings on Windows 10, open Settings > Power & sleep and change the Sleep setting.

Fixing the problem of the CPU being Stuck at low clock speed in Windows 11/10 requires changes to the Power Management and Processor State settings.