NEC VERSA LITEPAD TABLET PC Manual page 129

Problem
LCD screen is dark and
blank.
Battery power does not
last long.
Information on the LCD
screen is difficult to see.
Troubleshooting
What to Do
Power-saving mode has shut off the
backlight. Try to recover by tapping your
pen, moving your mouse, or pressing
any keyboard key.
Screen brightness needs adjustment.
Adjust the brightness in Windows.
Double click (tap) the pen and tablet
icon in the system tray, select Display,
adjust the Brightness for AC or battery
operation.
The system entered Standby mode due
to low battery power. Plug in the AC
adapter before resuming operation.
If you are using wireless LAN, run it on
AC power. If you are using an optical
drive, such as the CD-ROM drive, use it
on AC power.
Fully charge and fully discharge the
battery several times to recondition it.
Use the Battery Refresh function in the
Standard Menu of the BIOS Setup utility
(see "Standard Menu" in Chapter 3).
Replace the battery.
Use power-saving modes.
Adjust the brightness in Windows.
Double click (tap) the pen and tablet
icon in the system tray, select Display,
adjust the Brightness for AC or battery
operation.
Solving System Problems 8-3