34
Chapter 4. Troubleshooting
Other problems
Your computer does not
respond.
•
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
battery
pack
and
the
AC
power
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.
I need to start the computer
from a connected device,
but the device does not
appear on the boot device
list.
•
Check
the
boot
mode
setting
in
the
BIOS
setup
utility.
If
Boot
Mode
is
set
to
UEFI
,
make
sure
that
the
device
or
the
medium
in
the
device
supports
UEFI
boot.
If
the
device
or
the
medium
in
the
device
does
not
support
UEFI
boot,
set
Boot
Mode
to
Legacy
Support
.
If
the
device
still
does
not
appear
in
the
boot
device
list,
replace
with
a
new
device
or
medium.
The connected external
device does not work.
•
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
device
such
as
an
external
USB
optical
disk
drive,
use
an
external
device
power
adapter.
Otherwise,
the
device
may
not
be
recognized,
or
system
shut
down
may
result.
Summary of Contents for Flex 2 Pro-15
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