Lenovo B470e User Manual page 43

Problem
The computer does not start from a device you want.
The connected external device does not work.
For more technical support, please go to
http://consumersupport.lenovo.com
Solution
• Your computer might lock when it enters sleep mode
during a communication operation. Disable the sleep
timer when you are working on the network.
1. Check the settings under Boot menu of the BIOS
Setup Utility program. Make sure that the Boot
Priority Order option starts from the device you
want.
2. Also make sure that the device from which the
computer starts is enabled. Under the Boot menu,
make sure that the device is included in the Boot
Priority Order list.
3. 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.
Make sure that:
• Do not connect or disconnect any external device
cables other than USB cables while the computer
is turned on; otherwise, you might damage your
computer.
• When using a high power consumption external
devices such as an external USB optical drive, use
external device power adapter. Otherwise, the device
may not be recognized, or the system might be turned
off.
.
Chapter 5 Troubleshooting
27