Lenovo IdeaPad U410 IdeaPad U310&U410 User Guide V1.0 (English) - Page 41

Troubleshooting, Other problems, Boot Priority Order, HotKey Switch, Hotkey Mode - sleep disabled

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Chapter 5. 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 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. • Press Fn + F12 (when HotKey Switch is set to Hotkey Mode) or F12 (when HotKey Switch is set to Legacy Mode) when the Lenovo logo appears on the screen while the computer is starting up 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. 37

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Chapter 5. Troubleshooting
37
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.
•
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.
•
Press
Fn
+
F12
(when
HotKey Switch
is set to
Hotkey Mode
) or
F12
(when
HotKey Switch
is set to
Legacy Mode
) 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
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.