Lenovo Y520 Manual del usuario - Página 28

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Chapter 4. Troubleshooting

Sound problems

No sound can be heard

from the speaker even

when the volume is 

turned up.

Battery pack problems

Your computer shuts

down before the battery

status indicator shows

empty.

-or-

Your computer operates

after the battery status

indicator shows empty.

The computer does not

operate with a fully

charged battery pack.

A hard disk drive problem

The hard disk drive does

not work.

Recovery System problems

Failure to restore system

partition to factory default.

• Make sure that:

- The Mute function is off.

- The combo audio jack is not being used.

- Speakers are selected as the playback device.

• Discharge and recharge the battery pack.

• The surge protector in the battery pack might be active. Turn

off the computer for one minute to reset the protector; then

turn on the computer again.

• Make sure that the hard disk drive is included in the Boot

menu in the BIOS setup utility correctly.

• The system partition (e.g. the partition size or the drive

capacity of C) has been modified.