Lenovo V4400u User Guide - Lenovo V4400u - Page 51

Press F12., ensure that you use the power cable that comes with the external device. Otherwise

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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 37

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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:
Chapter 7
.
Troubleshooting computer problems
37