What should I do if I cannot turn off my VAIO computer?

• Follow any of these procedures to exit all running software and then turn off your VAIO computer again.

• Click the close button in the window of the running software.

• Press the Alt+F4 keys.
  If there is unsaved data, a message prompting you to save data appears. Click the button to save data.
  Press the Alt+F4 keys until the Shut Down Windows window appears, select Shut down from the drop-down list, and click OK.

• If you have installed new software on your VAIO computer, check if the software is working properly, its data is normal, and you have operated it correctly.

• Contact the software publisher or designated provider for technical support.

• If you connect peripheral devices, such as a printer or a USB device, to your VAIO computer or connect the computer to your network, disconnect all peripheral devices or the computer’s network connection and then turn off the computer.
  While the computer is communicating with a peripheral device or the network, Windows does not allow you to turn off the computer. In addition, some peripheral device drivers for the peripheral devices do not support the feature to force the computer to shut down.

• If the computer screen freezes, press the Ctrl+Alt+Delete keys and click (Shut down) in the lower right corner of the computer screen.

• If your VAIO computer freezes with a message indicating the settings are being saved or the computer is shutting down displayed, follow these procedures in order.

• Press the Enter key.
  Wait for a while.

• If the problem persists, press the Ctrl+Alt+Delete keys.
  Wait for a while.

• If you still cannot turn off your VAIO computer even after you follow all the above procedures in this topic, perform the following operations.
  Note that performing these operations may cause working data to become corrupted. Be sure to disconnect the computer from the network before performing the following operations.

• Press the Ctrl+Alt+Delete keys and click (Shut down) in the lower right corner of the computer screen.

• Press and hold the (Power) button for more than four seconds.

• Unplug the AC adapter and remove the battery pack from your VAIO computer.