Some of the basic repairs you could do as a user, is to follow the in-built tools.
Unreliable commands can change the default parameters.
If you had registry options or group-policy editor ill configured, then there could be problems.
see to it the system is like brand new as it is when you received from OEM.
Then take a stab at set the desired power mode to your liking.
First, run thebuilt-in Power TroubleshooterinSettings, which can diagnose issues withpower plansand suggest fixes.
Third,reset all power plansto default in Command Prompt to eliminate any customizations causing problems.
This deletes all custom power plans.
Fourth, run theSystem File Checkertool to scan for and restore corrupted system files that may block power prefs.
Fifth, check for any OEM software managing power controls and override Windows, like Dell or HP software.
Update graphics drivers subsequently.
Seventh, disable theBrightnessResettask in Task Scheduler if applicable, as it can interfere with power modes.
The article outlines several troubleshooting steps in detail to try whenunable to change the Power Mode in Windows 11/10.
Updating drivers may also help resolve compatibility issues.
If your CPU is older, you will get the cannot set Power Mode error.
Consider upgrading your hardware if possible.
Go to Control Panel > Hardware and Sound > Power Options > Edit Plan parameters.
Re-enable them and try changing the mode again.
Seethis Microsoft Answers postfor more details on this solution.
Power troubleshooter, balanced plan, and SFC can help fix issues.
Hopefully one of these 5 solutions can help you get Power Mode working again!
Let me know if the Power Mode cannot be set error persists even after trying the above fixes.
