Lenovo B50-45 User Guide - Lenovo B40-xx, B50-xx, B50-30 Touch Notebook - Page 34

Troubleshooting, Sound problems, Battery problems, Hard disk drive problem

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Chapter 4. Troubleshooting 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 used. ‐ The speakers are selected as the playback device. Battery problems Your computer shuts down before the power and battery status indicator shows empty. -orYour computer operates after the power and battery status indicator shows empty. • Reset the battery gauge using Lenovo Energy Management. If the problem persists, replace with a new battery pack. The computer does not • The surge protector in the battery might be active. operate with a fully charged Turn off the computer for one minute to reset the battery. protector; then turn on the computer again. Hard disk drive problem The hard disk drive does not • In the Boot menu in the BIOS setup utility, make work. sure that the hard disk drive is included in the EFI list. 28

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28
Chapter 4. Troubleshooting
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
 
used.
‐
The
 
speakers
 
are
 
selected
 
as
 
the
 
playback
 
device.
 
Battery problems
Your computer shuts down
before the power and
battery status indicator
shows empty.
-
or
-
Your computer operates
after the power and battery
status indicator 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
 
again.
Hard disk drive problem
The hard disk drive does not
work.
• In
 
the
 
Boot
 
menu
 
in
 
the
 
BIOS
 
setup
 
utility,
 
make
 
sure
 
that
 
the
 
hard
 
disk
 
drive
 
is
 
included
 
in
 
the
 
EFI
 
list.