Lenovo S40-70 User Guide - Lenovo S40 - Page 44

Troubleshooting, Other problems, Your computer does not, respond., start from a device

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Chapter 6. Troubleshooting Other problems Your computer does not respond. The computer does not start from a device you want. The connected external device does not work. • To turn off your computer, press and hold the power button for 4 seconds or more. If the computer still does not respond, remove the AC adapter. • Your computer might lock when it enters sleep mode during a communication operation. Disable the sleep timer when you are working on the network. • See the Boot menu of the BIOS setup utility. Make sure that the UEFI in the BIOS setup utility is set so that the computer starts from the device you want. • Also make sure that the device from which the computer starts is enabled. In the Boot menu in the BIOS setup utility, make sure that the device is included in the UEFI list. • While powered-off, press Novo button to select the device you want the computer starts from. • Do not connect or disconnect any external device cables other than USB while the computer power is on; otherwise, you might damage your computer. • When using a high power consumption external devices such as an external USB optical disk drive, use external device power adapter. Otherwise, the device may not be recognized, or system shut down may result. 38

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38
Chapter 6. Troubleshooting
Other problems
Your computer does not
respond.
•
To
tu
r
n
off yo
u
r comp
ut
er, press a
n
d hold
t
he power
b
utt
o
n
for 4 seco
n
ds or more. If
t
he comp
ut
er s
ti
ll
does
n
o
t
respo
n
d, remove
t
he AC adap
t
er.
•
Yo
u
r comp
ut
er m
ig
h
t
lock whe
n
it
e
nt
ers sleep mode
d
u
r
ing
a comm
uni
ca
ti
o
n
opera
ti
o
n
. D
i
sable
t
he sleep
ti
mer whe
n
yo
u
are work
ing
o
n
t
he
n
e
t
work.
The computer does not
start from a device you
want.
•
S
ee
t
he
Boot
me
nu
of
t
he BIO
S
se
tu
p
uti
l
it
y. Make
s
u
re
t
ha
t
t
he
UEFI
in
t
he BIO
S
se
tu
p
uti
l
it
y
i
s se
t
so
t
ha
t
t
he comp
ut
er s
t
ar
t
s from
t
he dev
i
ce yo
u
wa
nt
.
•
Also make s
u
re
t
ha
t
t
he dev
i
ce from wh
i
ch
t
he
comp
ut
er s
t
ar
t
s
i
s e
n
abled. I
n
t
he
Boot
me
nu
in
t
he
BIO
S
se
tu
p
uti
l
it
y, make s
u
re
t
ha
t
t
he dev
i
ce
i
s
in
cl
u
ded
in
t
he
UEFI
l
i
s
t
.
•
Wh
i
le powered-off, press Novo b
utt
o
n
t
o selec
t
t
he
dev
i
ce yo
u
wa
nt
t
he comp
ut
er s
t
ar
t
s from.
The connected external
device does not work.
•
Do
n
o
t
co
nn
ec
t
or d
i
sco
nn
ec
t
a
n
y ex
t
er
n
al dev
i
ce
cables o
t
her
t
ha
n
U
S
B wh
i
le
t
he comp
ut
er power
i
s
o
n
; o
t
herw
i
se, yo
u
m
ig
h
t
dama
g
e yo
u
r comp
ut
er.
•
Whe
n
u
s
ing
a h
ig
h power co
n
s
u
mp
ti
o
n
ex
t
er
n
al
dev
i
ces s
u
ch as a
n
ex
t
er
n
al U
S
B op
ti
cal d
i
sk dr
i
ve,
u
se ex
t
er
n
al dev
i
ce power adap
t
er. O
t
herw
i
se,
t
he
dev
i
ce may
n
o
t
be reco
gni
zed, or sys
t
em sh
ut
dow
n
may res
u
l
t
.