Table 2-17

Solving Power Problems

Problem

Possible Cause

Solution

Computer will not turn on.

Battery is discharged and computer is not connected to a power source.

■Charge the battery pack.

■Replace the battery pack.

■Connect the computer to an external power source.

 

Battery is discharged and

Ensure that cables connecting the

 

cables to the external power

computer and the external power

 

source are unplugged.

source are plugged in properly.

Computer turned off

Computer initiated because

■ Charge the battery pack.

while it was left

of a critical low battery

■ Replace the battery pack.

unattended.

condition.

■ Connect the computer to an

 

 

 

 

external power source.

 

 

 

 

The computer initiated

Turn on the computer.

 

Hibernation after a user-

 

 

defined timeout expired.

 

 

Table 2-18

 

 

Solving Screen Problems

Problem

Possible Cause

Solution

Characters on computer

Computer is in direct light.

display are dim.

 

The brightness control is not

 

 

set properly.

Move the computer or adjust the screen.

Adjust the brightness control by pressing the Fn+F10 hotkeys.

You may have a screen saver or screen blanking utility installed.

Press any key to refresh the screen.

Screen timeout was initiated.

Press any key to light the screen.

System initiated Suspend

Press the suspend button to exit

after a user-defined timeout

Suspend.

expired.

 

Computer initiated a low battery Suspend or Hibernation.

■Replace the battery pack and exit Suspend or Hibernation.

■Connect the computer to an external power source and exit Suspend or Hibernation.

 

Power Management, which

■ Replace the battery pack and

 

controls Suspend and

turn on the computer.

 

Hibernation, is disabled and

■ Connect the computer to an

 

the battery pack has

external power source and turn

 

discharged.

on the computer.

Computer screen is blank

Display was switched to the

Press Fn+F4 to display

and external monitor

external monitor.

information on the computer

displays information.

 

screen; press Fn+F4 again to

 

 

display information

 

 

simultaneously on both screens.

 

Display switch is stuck.

Tap the switch.

Fn+F4 hotkey combination

CRT or other display device is

does not switch between

not connected properly.

internal and external

 

displays.

 

Check your connections to ensure that an external device is connected properly.

Troubleshooting 2-25