User Guide

Chapter 4. Troubleshooting
27
Sound problems
No sound can be heard
from the speakers even
when the volume is turned
up.
• Make sure that:
-The mute function is off.
-The combo audio jack is not being used.
- The 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 indi-
cator shows empty.
• Reset the battery gauge using Lenovo Energy
Management. If the problem persists, replace with a
new battery pack.
The computer does not
operate with a fully charged
battery.
• 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 ag
ain.
A hard disk drive problem
The hard disk drive does
not work.
• In the Boot menu in the BIOS setup utility, m a k e sure
that the hard disk drive is included in the EFI list.