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Chapter 4. Troubleshooting
31
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.
The computer does not start
from a device you want.
See the EFI list of the BIOS setup utility. Make sure
that 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. Make sure that the
device is included in the EFI list in the BIOS setup
utility correctly.
Press F12 when the Lenovo logo appears on the
screen while the computer is starting up to select the
device you want the computer starts from.
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 might not be recognized, or system shut
down might result.
37


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