Lenovo Y450 Laptop Lenovo IdeaPad Y450 User Guide V3.0 - Page 66

Other problems, Your computer does not respond., The computer does not start from a device you want.

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Chapter 4. Troubleshooting „ Other problems Your computer does not respond. ƒ 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 adapter and the battery. ƒ 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 startup sequence 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. 57

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57
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 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.
See the Boot menu of the BIOS Setup Utility. Make sure that the startup
sequence 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.