Lenovo B4400 (English) User Guide - Page 32

Troubleshooting, A hard disk drive problem, Other problems, Startup, Priority Order - bios

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Chapter 4. Troubleshooting A hard disk drive problem The hard disk drive does not work. • In the Startup menu in the BIOS setup utility, make sure that the hard disk drive is included in the Boot Priority Order list. 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 Boot Priority Order 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 Boot Priority Order 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 may not be recognized, or system shut down may result. 28

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Chapter 4. Troubleshooting
A hard disk drive problem
The hard disk drive does
not work.
•
In the
Startup
menu in the BIOS setup utility, make
sure that the hard disk drive is included in the
Boot
Priority Order
list.
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
Boot Priority Order
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
Boot Priority Order
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 may not be recognized, or system shut down
may result.