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What is the make and model number of your computer?
Try the below methods and check if you get back the power plans.
Method 1: Checking For System File Corruption And Restoring Default Power Plans.
Click on the Start Menu > Search for Command Prompt > Right-click on Command Prompt > Click on Run As Administrator.
Once the Command Prompt is up and running, type the following commands one by one and hit Enter after each command is executed successfully.
- sfc /scannow
- powercfg –restoredefaultschemes
- DISM /Online /Cleanup-Image /RestoreHealth
Restart the computer once after executing the above commands and check for the issue.
If the issue persists, then follow Method 2.
Method 2: Reactivating High Performance Power Plan.
- Right-click on the battery icon from the taskbar and click on Power Options.
- From the left-pane, click on Create a power plan and checkbox the option High Performance.
- At the bottom of the window, type in a name for the plan and click on Next.
Restart the computer once after making the changes and check if the plan is reactivated and if not, then follow Method 3.
Method 3: Making Changes To The Registry.
Note: This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, please refer this link: How to back up and restore the registry in Windows.
- Press the Windows and R keys > Type Regedit > Hit Enter.
- Once the left pane, go to the following location: HKEY_LOCAL_MACHINE \ SYSTEM \ CurrentControlSet
Control \ Power - Click on Power and on the right side, double-click on CsEnabled key and change the Value data from 1 to 0.
- Restart the computer once and check if you are able to see the power plans.
If the issue persists, then follow Method 3.
Method 4: Creating A New User Account.
If you are still not able to see the power plans after following the troubleshooting steps from the above methods, then I suggest you to Create A New Administrator User Account and check if you are able to see the power plans in the newly created user account.
If you have additional questions, or if the issue persists after performing the above troubleshooting steps, please let me know by replying to this thread. This way, I'll get notified and respond back to you as soon as I can.