Wait a few moments for your system to catch up.
If your PC hangs while doing something processor- or RAM-intensive, it might unfreeze on its own if you give it some time. Instead of clicking around or trying to close programs, try waiting to see if the problem resolves on its own.
If the screen went black when your computer froze, try pressing Windows key + Ctrl + Shift + B to reset your video card drivers.
End hung tasks in the Task Manger.
If your PC won't unfreeze on its own, press Control + Shift + Esc at the same time to display all open apps in Task Manager.
If you can't open Task Manager this way, try pressing Ctrl + Alt + Del and then clicking Task Manager. You can also right-click the Start menu and select Task Manager.
Once Task Manager opens, look for the app using the most CPU, Memory, Disk, or GPU resources.
To stop the problem app, click its name and select End Task. It may take a few moments for the app to close.
Restart your PC.
If your PC is still unresponsive and/or you can't open the Task Manager, there's not much else you can do until you restart your PC. Press and hold the Power button on your laptop or desktop computer until the screen turns off, then press the Power button again to turn it back on.
If your PC's screen turned blue before it froze (an error known as the Blue Screen of Death), you can analyze the crash dump files to see which software, hardware, or drivers lead to the crash.
Greetings,
Peter