The computer is frozen. A program is not responding

Push the Ctrl, Alt, and Delete keys at the same time. Then, start the Task Manager, highlight the program’s name, and hit the End Task button.
Perform a hard reboot by simply pressing the on/off button to turn off the computer manually. This action should only be done as a last resort if you have an unresponsive program or critical error. This process could cause data loss or corruption.
Once the computer is responding again, run a virus check