While a frozen computer can be the result of many different causes, sometimes closing the problematic applications can be the quickest solution. If this doesn't work, then a hard reset can help reboot the computer.
Following specific steps can help unfreeze a laptop computer.
While the easiest way to close out of an application on a Windows PC is by clicking the "x" on the right-hand corner of the window, this may not always work. If the application is frozen to the point where it cannot be directly closed, press Ctrl + Alt + Del on the keypad to close the application.
Hold down the power button for a few seconds and then reboot. This may cause some unsaved files to be lost, so be sure to frequently save data.