User's Manual

3–2 Quick Reference
Troubleshooting
The suggestions below may help you determine the reason the
computer will not start up:
■ If the computer is plugged into an AC outlet, be sure that the
AC outlet is providing adequate power by plugging another
electrical device into the outlet.
■ If the computer is running on battery power or is plugged
into an external power source other than an AC outlet, plug
the computer into an AC outlet using the AC adapter. Be sure
that the power cord and AC adapter connections are secure.
■ If the computer is running on battery power, try these
suggestions:
❏ Remove the primary battery and optional accessory
battery (if applicable) and plug the computer into an AC
outlet using the AC adapter. If the computer starts up, one
of the batteries may need to be replaced.
❏ If the battery light on the front of the computer is blinking,
the battery has reached a low-battery condition, which
may not allow the computer to start up. Plug the computer
into an AC outlet using the AC adapter to start the
computer and allow the battery to charge.
The computer screen is blank
If you have not turned off the computer but the screen is blank,
one or more of the following may be the cause:
■ The computer may be in the Sleep state or Hibernation.
■ The computer may not be set to display the image on the
computer screen.
■ The display switch may not be functioning properly.