If Windows + L isn't working, check the following:
In the location box, copy and paste this exact command: rundll32.exe user32.dll,LockWorkStation . Click and name it "Lock PC" or "Lock Screen." lock screen shortcut pc
You can right-click this new shortcut, select Properties , and assign a custom keyboard shortcut (like Ctrl + Alt + L ) in the "Shortcut key" field. If Windows + L isn't working, check the