Sony VGC-LV170J - Manual (Page 155)

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Troubleshooting
What should I do if the green power indicator light turns on but my screen remains blank?
❑ If the orange DISPLAY OFF indicator is lit, press the DISPLAY OFF button.
❑ Make sure the computer input is selected. To change the display input, press the HDMI SELECT button on the right of
the computer.
❑ Press the Alt+F4 keys several times to close the application window. An application error may have been occurred.
❑ Press the Ctrl+Alt+Delete keys and click the arrow next to the Shut down button and Restart.
❑ 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 worn out.
Turning off your computer with the power button or the Ctrl+Alt+Delete keys may cause loss of unsaved data.