If your Windows 11 PC is acting quirky and normal troubleshooting isn’t helping, let’s look at a couple of options that could help.
First, type Recovery Options in the search box and click on the result.

You’ll see a list of recovery options. At the top of the list, you can run troubleshooters to see if that tracks down the problem.

Your first choice under Recovery options is to reset the PC.

You can choose from two options. Keep my files removes apps and settings but keeps your personal files like documents, pictures, and videos. Any apps that are not part of Windows 10 will need to be reinstalled from either disc or download. You’ll also need any product keys required to activate the programs. You also need to know your Microsoft username and password as well as the password for your home WiFi network.

Remove everything is the equivalent of a factory reset. It removes all of your files along with the apps and settings. This could be necessary if your PC is ins really bad shape. It’s also a good idea if you’re passing the PC along to someone else or if you have a new PC. This can get rid of any bloatware that might have been added to the PC. Make sure you have copies of any files that you intend to keep.
If you choose to keep your personal files, you’ll be shown a list of apps that will need to be reinstalled from sources other than the Windows Store. Click Next to proceed.

It will take a moment or two to get ready. Click Reset when you’re ready to begin.

It will take some time for Windows to reinstall.
You also have the option of choosing Restart now under advanced startup to restart your PC with a recovery disc or drive or to restore from a system image.