Sony VAIO VPCL2 Series User Manual page 152

Troubleshooting >
Computer Operations
What should I do if the green power indicator light turns on but my screen remains blank?
❑ If the orange DISPLAY OFF indicator light is lit, press the DISPLAY OFF button.
❑ Make sure the computer input is selected as the audio/video input source. To change the display input, press the INPUT/
OK button on the computer
❑ Press the Alt+F4 keys several times to close the application window. An application error may have occurred.
❑ Press the Ctrl+Alt+Delete keys and click the arrow
❑ Press and hold the power button for more than four seconds to shut down your computer. Unplug the AC adapter and
leave the computer for about five minutes. Then, plug the AC adapter and turn on the computer again.
!
Make sure that the batteries of your wireless keyboard and remote commander (if supplied) are properly installed and not running out of power.
Turning off your computer with the Ctrl+Alt+Delete keys or the power button may cause loss of unsaved data.
(page 74) or the INPUT SELECT button on the remote commander (if supplied)
next to the Shut down
(page
button and Restart.
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77).