Lenovo Ideapad 110 14ast 110 15ast User Guide

							Chapter 4. Troubleshooting
27
Other problems
Your computer does not 
respond.•To turn off your computer, press and hold the Power button 
for four seconds or more. If the computer still does not 
respond, remove 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 menu 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 menu in the BIOS setup utility correctly.
•While turned off, press the Novo button to select the device 
you want the computer to start 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 high power consumption external devices such 
as an external USB optical disk drive, use an external device 
power adapter. Otherwise, the device may not be recognized, 
or the system may shut down as a result. 
						

							28
Appendix A. CRU instructions
Note:The CRU service is only applicable to certain countries.
Removing the optical drive    - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -   
To remove the optical drive, do the following:
1Turn off the computer. Disconnect the AC power adapter and all cables from the computer.
2Close the computer display, and then turn the computer over.
3Remove the screw shown in the illustration .
4Gently pull the optical drive out .
5Remove the screw , then remove the optical drive bracket in the direction shown by 
arrow 
. 
						

							Appendix A. CRU instructions
29
6
Carefully remove the optical drive bezel in the direction shown by arrow .
The following table provides a list of CRUs (C
ustomer Replaceable Units) for your computer 
and informs you of where to find replacement instructions.
Safety, Warranty, 
and Setup Guide User Guide
AC power adapter O
Optical drive O 
						

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Trademarks
The following terms are trademarks or registered trademarks of Lenovo in the United States, 
other countries, or both.
Lenovo
OneKey
ideapad
Microsoft and Windows are trademarks of Microsoft Corporation in the United States, other 
countries, or both.
Other company, products, or service names may be trademarks or service marks of others. 
						

							©Lenovo China 2016
en-US
Rev. AA00