Lenovo G455 Lenovo G455/G555 UserGuide V1.0 - Page 36

Troubleshooting, Other problems

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Chapter 5. 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 AC adapter and the battery. • 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 • See the Boot menu of the BIOS Setup Utility. Make sure that the device you want. Boot priority order 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 Boot priority order list. The connected external device does • Do not connect or disconnect any external device cables other than not work. 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. 28

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28
Chapter 5. 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
AC adapter and the battery.
•
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
Boot
menu of the
BIOS Setup Utility
. Make sure that the
Boot priority order
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
Boot priority order
list.
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 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.