Chapter 5. Troubleshooting

Computer screen problems

The screen is blank.

Do the following:

 

 

 

- If you are using the AC adapter, or using the battery, and

 

 

the battery status indicator is on, press

to make the

 

 

screen brighter.

 

 

 

- If the power indicator is in blinking, press the power

 

 

button to resume from the sleep mode.

 

 

 

- If the problem persist, follow the solution in the following

 

 

problem “The screen is unreadable or distorted.”

The screen is unreadable or

Make sure that:

 

distorted.

 

- The display device driver is installed correctly.

 

 

- The screen resolution and color quality are correctly set.

 

 

- The monitor type is correct.

 

Incorrect characters appear on

Did you install the operating system or programs correctly?

the screen.

 

If they are installed and configured correctly, have the

 

 

computer serviced.

 

 

 

 

 

Sound problems

 

 

 

 

 

 

 

No sound can be heard from

Make sure that:

 

the speaker even when the vol-

 

- The Mute function is off.

 

ume is turned up.

 

- The headphone jack is not used.

 

 

 

- Speakers are selected as the playback device.

 

Battery problems

Your computer shuts down before the battery status indicator shows empty. -or-

Your computer operates after the battery status indicator shows empty.

The operating time for a fully charged battery is short.

The computer does not operate with a fully charged battery.

The battery does not charge.

Discharge and recharge the battery.

For details, see “Handling the battery” in Chapter 2.

The surge protector in the battery might be active. Turn off the computer for one minute to reset the protector; then turn on the computer again.

For details, see “Handling the battery” in Chapter 2.

34

Page 38
Image 38
Lenovo S400, S405, S300 manual Troubleshooting Computer screen problems, Sound problems, Battery problems