Lenovo G400s User Guide - Lenovo G400s, G400s Touch, G500s, G500s Touch, G405s - Page 40

Troubleshooting, Other problems, Your computer does not, respond., start from a device - network problem

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Chapter 4. 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 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. • See the Boot menu of the BIOS setup utility. Make sure that the UEFI 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 EFI list. • While turned off, press the Novo button to select the device you want the computer to start 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 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. 36

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36
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 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
Boot
menu of the BIOS setup utility. Make
sure that the
UEFI
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
EFI
list.
•
While turned off, press the Novo button to select the
device you want the computer to start 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 may not be recognized, or system shut down
may result.