Sony Vaio VPCL11 Series Operating Instructions - Hardware Manual page 119

Troubleshooting >
Computer
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.
❑ 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 power cord and
leave the computer for about five minutes. Then, plug the power cord and turn on the computer again.
!
Make sure that the batteries of your wireless keyboard and remote commander 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.
next to the Shut down button and Restart.
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