What should I do if my computer screen goes blank?

• Make sure your VAIO computer is on and not in a power saving mode. [Details]

• Make sure your VAIO computer is securely plugged into an AC outlet [Details] and the power indicator light is on.

• The display output may be set to an external display.
  Press the P key several times while holding down the (Windows) key to select your desired display output, and then press the Enter key. [Details]

• If you wait for a while and the computer screen remains blank, follow the procedures below:

• Press and hold down the (Power) button for more than four seconds, check if the power indicator light is off, and then turn on your VAIO computer.

• If the problem persists, press and hold down the (Power) button for more than four seconds and check if the power indicator light is off. Disconnect all cables and peripheral devices, such as the power cord and the USB device, and wait about five minutes. Then, put them back in place and turn on your VAIO computer again.