Lenovo Yoga 2 11 Laptop User Guide (Windows 8.1) - Lenovo Yoga 2 11 - Page 34

Troubleshooting, Display panel problems, Sound problems, Incorrect characters appear

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Chapter 4. Troubleshooting The computer does not return from sleep mode and the computer does not work. • If your computer is in sleep mode, connect the AC power adapter to the computer, then press the Windows button or the Power button. • If the system still does not return from sleep mode, your system has stopped responding, and you cannot turn off the computer; reset the computer. Unsaved data may be lost. To reset the computer, press and hold the Power button for eight seconds or more. If the computer still does not reset, remove the AC power adapter. Display panel problems The screen is blank. • Do the following: - If you are using the AC power adapter or the battery, and the battery status indicator is on, press F12 ( ) to make the screen brighter. - If the power indicator is blinking, press the Power button to resume from sleep mode. - Press F9 ( ) to confirm whether the backlight of the LCD screen has been turned off. - If the problem persists, follow the solution in the next problem "The screen is unreadable or distorted." The screen is unreadable or distorted. • Make sure that: - The screen resolution and color quality are correctly set. - The monitor type is correct. Incorrect characters appear • Is the operating system or programs installed on the screen. correctly? If they are installed and configured correctly, have the computer serviced. 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. - Speakers are selected as the playback device. 30

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30
Chapter 4. Troubleshooting
The computer does not
return from sleep mode and
the computer does not
work.
•
If yo
u
r comp
ut
er
i
s
in
sleep mode, co
nn
ec
t
t
he AC
power adap
t
er
t
o
t
he comp
ut
er,
t
he
n
press
t
he
W
in
dows b
utt
o
n
or
t
he Power b
utt
o
n
.
•
If
t
he sys
t
em s
ti
ll does
n
o
t
re
tu
r
n
from sleep mode,
yo
u
r sys
t
em has s
t
opped respo
n
d
ing
, a
n
d yo
u
ca
nn
o
t
tu
r
n
off
t
he comp
ut
er; rese
t
t
he comp
ut
er. U
n
saved
da
t
a may be los
t
. To rese
t
t
he comp
ut
er, press a
n
d
hold
t
he Power b
utt
o
n
for e
ig
h
t
seco
n
ds or more. If
t
he comp
ut
er s
ti
ll does
n
o
t
rese
t
, remove
t
he AC
power adap
t
er.
Display panel problems
The screen is blank.
•
Do
t
he follow
ing
:
- If yo
u
are
u
s
ing
t
he AC power adap
t
er or
t
he
ba
tt
ery, a
n
d
t
he ba
tt
ery s
t
a
tu
s
in
d
i
ca
t
or
i
s o
n
, press
F12
(
)
t
o make
t
he scree
n
br
ig
h
t
er.
- If
t
he power
in
d
i
ca
t
or
i
s bl
in
k
ing
, press
t
he Power
b
utt
o
n
t
o res
u
me from sleep mode.
- Press
F9
(
)
t
o co
n
f
i
rm whe
t
her
t
he backl
ig
h
t
of
t
he LCD scree
n
has bee
n
tu
r
n
ed off.
- If
t
he problem pers
i
s
t
s, follow
t
he sol
uti
o
n
in
t
he
n
ex
t
problem
“
The scree
n
i
s
un
readable or
d
i
s
t
or
t
ed.
”
The screen is unreadable or
distorted.
•
Make s
u
re
t
ha
t
:
-
The scree
n
resol
uti
o
n
a
n
d color q
u
al
it
y are correc
t
ly
se
t
.
- The mo
nit
or
t
ype
i
s correc
t
.
Incorrect characters appear
on the screen.
•
Is
t
he opera
ting
sys
t
em or pro
g
rams
in
s
t
alled
correc
t
ly? If
t
hey are
in
s
t
alled a
n
d co
n
f
igu
red
correc
t
ly, have
t
he comp
ut
er serv
i
ced.
Sound problems
No sound can be heard
from the speakers even
when the volume is turned
up.
•
Make s
u
re
t
ha
t
:
- The M
ut
e f
un
c
ti
o
n
i
s off.
- The combo a
u
d
i
o
j
ack
i
s
n
o
t
be
ing
u
sed.
-
S
peakers are selec
t
ed as
t
he playback dev
i
ce.