Lenovo Ideapad 100 15ibd User Guide

							Chapter 3. Troubleshooting
17
The computer does not 
return from sleep mode and 
the computer does not 
work. If your computer is in sleep mode, connect the AC 
power adapter to the computer, then press the 
Windows button or the Power button.
If the system still does not return from sleep mode, 
your system has stopped responding, and you cannot 
turn off the computer; reset the computer. Unsaved 
data may be lost. To reset the computer, press and 
hold the Power button for eight seconds or more. If 
the computer still does not reset, remove the AC 
power adapter.
Display panel problems
The screen is blank. Do the following:
- If you are using the AC power adapter or the 
battery, and the battery status indicator is on, press 
F12 (
) to make the screen brighter.
- If the power indicator is blinking, press the Power 
button to resume from sleep mode.
-Press F9 () to confirm whether the backlight of 
the LCD screen has been turned off.
- If the problem persists, follow the solution in the 
next problem “The screen is unreadable or 
distorted.”
The screen is unreadable or 
distorted.Make sure that: 
- The screen resolution and color quality are correctly 
set. 
- The monitor type is correct.
Incorrect characters appear 
on the screen.Is the operating system or programs installed 
correctly? If they are installed and configured 
correctly, have the computer serviced.
Sound problems
No sound can be heard 
from the speakers even 
when the volume is turned 
up.Make sure that:
- The Mute function is off.
- The combo audio jack is not being used.
- Speakers are selected as the playback device.  
						

							Chapter 3. Troubleshooting
18
Battery problems
Your computer shuts down 
before the battery status 
indicator shows empty.
 
-or- 
Your computer operates 
after the battery status 
indicator shows empty.
Recharge the battery.
A hard disk drive problem
The hard disk drive does 
not work.In the Boot menu in BIOS setup utility, make sure 
that the hard disk drive is included in the UEFI 
correctly.
Other problems
Your computer does not 
respond.To turn off your computer, press and hold the Power 
button for eight 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 UEFI 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. In the Boot menu in the 
BIOS setup utility, make sure that the device is 
included in the UEFI list.
While powered-off, press Novo button to select the 
device you want the computer starts 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. 
						

							19
Appendix A. CRU instructions
Removing the keyboard - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
To remove the keyboard, 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 screws that secure the keyboard  .
4Turn the computer over, and then open the computer display.
5Push the keyboard with the tip of an unfolded paper clip (or similar 
object without a sharp tip) through the screw hole on the back cover.
6
Loosen the keyboard with fingers  , and then lift the keyboard slightly  .
a
111
bc
32
2 
						

							20
Appendix A. CRU instructions
7Disconnect the keyboard connector in the direction shown by arrows   
and  . Then remove the keyboard.
d
e
54 
						

							Appendix A. CRU instructions
21
Removing the optical drive - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
To remove the optical drive, do the following:
1Remove the keyboard. For details, see “Removing the keyboard” on page 19.
2Remove the screw shown in the illustration  .
3Gently pull the optical drive out  .
4Remove the screw  , then remove the optical drive bracket in the 
direction shown by arrow  .a
b
1
2
c
d
3
4 
						

							22
Appendix A. CRU instructions
5
Carefully remove the optical drive bezel in the direction shown by arrow  .
The following table provides a list of CRUs (Customer Replaceable Units) for 
your computer and informs you of where to find replacement instructions.
Safety, Warranty, 
and Setup GuideUser Guide
AC power adapterO
KeyboardO
Optical driveO
e
5 
						

							23
Trademarks
The following terms are trademarks or registered trademarks of Lenovo in the 
United States, other countries, or both.
Lenovo
OneKey
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. 
						

							en-US
Rev. RP01

©Lenovo China 2016