Lenovo K4450 Laptop User Guide - Lenovo K4450 and K4450A - Page 47

Other problems, Startup, Boot Priority Order

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Other problems Print these instructions first. Your computer does not respond. Do either of the following: • Turn off your computer by pressing and holding the power button for four seconds or more. If the computer still does not respond, remove the ac power 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. Do the following: 1. Enter the BIOS program. 2. Select Startup → Boot. Ensure that the device is included in the Boot Priority Order list. 3. Press F12. 4. When the Lenovo logo is displayed on the screen, select the device that you want the computer to start from. The connected external device does not work. Ensure that: • The external device is connected by USB cables while the computer is turned on; otherwise, your computer might be damaged. • When you are using a high-power-consumption external device such as an external USB optical drive, ensure that you use the power cable that comes with the external device. Otherwise, the device might not be recognized, or the computer might be turned off. For more technical support information, go to: http://www.lenovo.com/support Chapter 7. Troubleshooting computer problems 33

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Chapter 7. Troubleshooting computer problems
33
Other problems
Print these instructions first.
Your computer does not respond.
Do either of the following:
•
Turn off your computer by pressing and holding the power button for four seconds or more. If the
computer still does not respond, remove the ac power 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.
Do the following:
1.
Enter the BIOS program.
2.
Select
Startup
→
Boot
. Ensure that the device is included in the
Boot Priority Order
list.
3.
Press F12.
4.
When the Lenovo logo is displayed on the screen, select the device that you want the computer to start
from.
The connected external device does not work.
Ensure that:
•
The external device is connected by USB cables while the computer is turned on; otherwise, your computer
might be damaged.
•
When you are using a high-power-consumption external device such as an external USB optical drive,
ensure that you use the power cable that comes with the external device. Otherwise, the device might not
be recognized, or the computer might be turned off.
For more technical support information, go to: