Quick Reference Guide

CHAPTER 9: Troubleshooting
120
The display is blank
• Adjust the brightness using the system keys or Windows
Mobility Center. For more information about adjusting
the brightness, see “Adjusting brightness” on page 44.
• Make sure the convertible notebook is not in Sleep or
Hibernate mode. Press the power button.
• The convertible notebook may be sending its display to
an external monitor or projector. Press F
N + F4 several
times to toggle through the LCD panel, an external
monitor or projector, or both.
DVD drives
Your convertible notebook does not recognize a disc
• The disc may not be seated correctly in the tray. When
you place a disc on the tray, make sure that you press
the disc firmly onto the spindle so the retainers hold the
disc in place.
• Make sure that the disc label is facing up, then try again.
• If you are trying to play a DVD, make sure that you have
a DVD drive. For more information, see “Identifying
drive types” on page 54.
• The modular drive may not be inserted completely into
the modular bay. Press the module into the bay, then
try to access the disc again.
• Try a different disc. Occasionally discs are flawed and
cannot be read by the drive.
• Some music CDs have copy protection software. You
may not be able to play these CDs on your convertible
notebook.
• Your convertible notebook may be experiencing some
temporary memory problems. Shut down and restart
your convertible notebook.
• Clean the disc. For more information, see “Cleaning CDs
or DVDs” on page 91.