If a program became unresponsive and you weren't able to quit it via any other method, shut it down. This method is more helpful to laptop users than to desktop computer users, because desktop computers have a dedicated restart button.
To force-shut-down the computer, press and hold the Power On/Off button until the cooling fans stop working (which should be in around 15-20 seconds after you have pressed the power button). Turn it back on after a minute or two.
Maybe your device has a more serious problem for which you are not aware of. If you tried everything but nothing worked, take your device to a repair store. They will diagnose and fix the problem.
Maybe a virus prevents your programs from closing properly. The best thing you should do is to scan it for viruses.
To learn how to check if your device is infected with a virus, check out the viruses/spywares/malware solutions.
If you are not sure which antivirus software to install, check out the don't know which antivirus software to install solutions.
Maybe your computer is slow and prevents the program from functioning (closing) properly.
To learn how to improve the speed of your computer, check out the computer is slow solutions.
If a program became unresponsive, you can close it via the System Monitor, by following the steps below:
If you don’t receive the email in the next 2 minutes please check your junk folder, and add [email protected] to your safe sender list.