Shut down, sleep, or hibernate your PC - Microsoft Support
There are many ways to shut down your PC—you can turn the PC off completely, you can make it sleep, or you can hibernate the PC. To shut down, select Start and then select Power > Shut down . Sleep uses very little power, your PC starts up faster, and you’re instantly back to where you left off.
Uninstall or remove apps and programs in Windows - Microsoft Support
There are different ways to remove apps and programs, so if you can't find the one you're looking for, you can try another location. Note that some apps and programs are built into Windows and can't be uninstalled. You can try to repair a program first, if it's just not running correctly.
Shut down (turn off) your PC - Microsoft Support
To turn off your PC in Windows 11, select the Start button, select the Power button, and then select Shut down . Was this information helpful?
Use the System File Checker tool to repair missing or corrupted system ...
When critical Windows system files are missing or corrupted, some Windows features may stop working correctly or Windows may stop responding altogether. If this happens, you can use the Deployment Image Servicing and Management tool (DISM) and the System File Checker tool (SFC) to scan your system files and restore any corrupted or missing files.
Startup Repair - Microsoft Support
Startup Repair is a Windows recovery tool that can fix certain system problems that might prevent Windows from starting. It scans your computer for the problem and then tries to fix it so your computer can start correctly.
Fix problems that block programs from being installed or removed
Block you from uninstalling a program through Add or Remove Programs (or Programs and Features) in Control Panel. If you're trying to remove malware, you can use Windows Security (or another antivirus tool), or you can use the Windows Malicious Software Removal tool.
Windows troubleshooters - Microsoft Support
Get Help has troubleshooters you can run for many common scenarios. These often help resolve issues without the need to contact support. If a troubleshooter is available for your issue, select Run to start that troubleshooter.
Restart (reboot) your PC - Microsoft Support
Select the Start button, then Power > Restart.
Open the Start Menu in Windows - Microsoft Support
Here’s how you can open it: Locate the Start button: The Start button is at the bottom of your screen on the taskbar. It looks like a Windows logo . Select the Start button: With the mouse, click on the Start button to open the Start menu.
Configure Startup Applications in Windows - Microsoft Support
Learn how to optimize system performance by managing startup applications in Windows.