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
.