If you are looking for ways to force quit Windows, then it is necessary to remember that Windows cannot be force quit just like any other program. But if your PC crashes and stops working, then it is possible to press Ctrl + Alt + Del and access Task Manager in order to force quit the program that caused the crash. But in case it does not work, then you need to press and hold down the Power button on the computer until it turns off. And when Windows starts up again, it will automatically restore itself.