Lenovo IdeaPad Z410 User Guide - IdeaPad Z410, Z510 - Page 31

Sleep problems, Display panel problems, computer does not work.

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Chapter 4. Troubleshooting Sleep problems The critical low-battery error • The battery power is getting low. Connect the AC power message appears, and the adapter to the computer. computer immediately turns off. The computer enters sleep mode immediately after Power-on. • Make sure that: - The battery is charged. - The operating temperature is within the acceptable range. See "Chapter 2. Use and care Information" in the Lenovo Safety and General Information Guide. Note: If the battery is charged and the temperature is within range, have the computer serviced. 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 Power button. • If your computer is powered-off, connect the AC power adapter to the computer, then press the Power button to resume operation. Note: 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 five seconds or more. If the computer still does not reset, remove the AC power adapter. Display panel problems The screen is blank. The screen is unreadable or distorted. Incorrect characters appear on the screen. • 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. - If the problem persists, follow the solution in the next problem "The screen is unreadable or distorted." - Press F9 ( ) to confirm whether the backlight of the LCD screen has been turned off. • Make sure that: - The display device driver is installed correctly. - The screen resolution and color quality are correctly set. - The monitor type is correct. • Is the operating system or programs installed correctly? If they are installed and configured correctly, have the computer serviced. 27

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Chapter 4. Troubleshooting
27
Sleep problems
The critical low-battery error
message appears, and the
computer immediately turns off.
•
The ba
tt
ery power
i
s
g
e
tti
n
g
low. Connec
t
t
he AC power
adap
t
er
t
o
t
he comp
ut
er.
The computer enters sleep
mode immediately after
Power-on.
•
Make s
u
re
t
ha
t
:
-
The ba
tt
ery
i
s char
g
ed.
-
The opera
ti
n
g
t
empera
tu
re
i
s w
it
h
i
n
t
he accep
t
able ran
g
e.
S
ee “Chap
t
er 2. Use and care Informa
ti
on”
i
n
t
he
Le
n
o
v
o
Safe
t
y a
n
d Ge
n
e
r
al I
n
fo
r
ma
t
io
n
G
u
ide
.
Note:
If
t
he ba
tt
ery
i
s char
g
ed and
t
he
t
empera
tu
re
i
s w
it
h
i
n ran
g
e, ha
v
e
t
he comp
ut
er ser
vi
ced.
The computer does not return
from sleep mode and the
computer does not work.
•
If yo
u
r comp
ut
er
i
s
i
n sleep mode, connec
t
t
he AC power
adap
t
er
t
o
t
he comp
ut
er,
t
hen press
t
he Power b
utt
on.
•
If yo
u
r comp
ut
er
i
s powered-off, connec
t
t
he AC power
adap
t
er
t
o
t
he comp
ut
er,
t
hen press
t
he Power b
utt
on
t
o
res
u
me opera
ti
on.
Note:
If
t
he sys
t
em s
ti
ll does no
t
re
tu
rn from sleep mode, yo
u
r sys
t
em has s
t
opped respond
i
n
g
, and yo
u
canno
t
tu
rn off
t
he comp
ut
er; rese
t
t
he comp
ut
er. Unsa
v
ed da
t
a may be los
t
. To rese
t
t
he comp
ut
er, press and
hold
t
he
Power b
utt
on for f
iv
e seconds or more. If
t
he comp
ut
er s
ti
ll does no
t
rese
t
, remo
v
e
t
he AC
power adap
t
er.
Display panel problems
The screen is blank.
•
Do
t
he follow
i
n
g
:
-
If yo
u
are
u
s
i
n
g
t
he AC power adap
t
er or
t
he ba
tt
ery, and
t
he ba
tt
ery s
t
a
tu
s
i
nd
i
ca
t
or
i
s on, press
F12
(
)
t
o
make
t
he screen br
ig
h
t
er.
- If
t
he power
i
nd
i
ca
t
or
i
s bl
i
nk
i
n
g
, press
t
he Power b
utt
on
t
o res
u
me from sleep mode.
- If
t
he problem pers
i
s
t
s, follow
t
he sol
uti
on
i
n
t
he nex
t
problem “The screen
i
s
u
nreadable or d
i
s
t
or
t
ed.”
- Press
F9
(
)
t
o conf
i
rm whe
t
her
t
he backl
ig
h
t
of
t
he
LCD screen has been
tu
rned off.
The screen is unreadable or
distorted.
•
Make s
u
re
t
ha
t
:
-
The d
i
splay de
vi
ce dr
iv
er
i
s
i
ns
t
alled correc
t
ly.
-
The screen resol
uti
on and color q
u
al
it
y are correc
t
ly se
t
.
-
The mon
it
or
t
ype
i
s correc
t
.
Incorrect characters appear on
the screen.
•
Is
t
he opera
ti
n
g
sys
t
em or pro
g
rams
i
ns
t
alled correc
t
ly?
If
t
hey are
i
ns
t
alled and conf
igu
red correc
t
ly, ha
v
e
t
he
comp
ut
er ser
vi
ced.