Lenovo Yoga 2 User Guide

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Chapter 4. Troubleshooting
Frequently asked questions - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
This section lists frequently asked questions by category.
Finding information
What safety precautions should I follow when using my computer?
The Lenovo Safety and General Information Guide which came with your 
computer contains safety precautions for using your computer. Read and 
follow all the precautions when using your computer.
Where can I find the hardware specifications for my computer?
You can find hardware specification for your computer on the pri
nted 
flyers which came with your computer.
Where can I find warranty information?
For the warranty applicable to your computer, including the warranty 
period and type of warranty service, see the Lenovo limited warranty flyer 
that came with your computer.
Drivers and preinstalled software
Where are the installation discs for Lenovo preinstalled software (desktop 
software)?
Your computer did not come with installation discs for Lenovo preinstalled 
software. If you need to reinstall any preinstalled software, you can find 
the installation program on the D partition of your hard disk. If you cannot 
find the installation program there, you can also download it
 from the 
Lenovo consumer support website.
Where can I find drivers for the various hardware devices of my computer?
If your computer is preinstalled with a Windows operating system, Lenovo 
provides drivers for all the hardware devices that you need on the D 
partition of your hard disk. You can also download the latest device drivers 
from the Lenovo consumer support website.
Lenovo OneKey Recovery System
Where are the recovery discs?
Your computer did not come with recovery discs. Use the Lenovo OneKey 
Recovery System if you need to restore the system to its factory status. 
						

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Chapter 4. Troubleshooting
What can I do if the back-up process fails?
If you can start the backup but it fails during the back-up process, try the 
following steps:
1Close all open programs, and then restart the back-up process.
2Check to see if the destination media is damaged. Select another path 
and then try again.
When do I need to restore the system to its factory status?
Use this feature when the operating system fails to start up. If there is 
critical data on the system partition, back it up before starting recovery.
BIOS setup utility
What is the BIOS setup utility?
The BIOS setup utility is ROM-based software. It displays basic computer 
information and provides options for setting boot devices, security,  
hardware mode, and other preferences.
How can I start the BIOS setup utility?
To  start the BIOS setup utility:
1Shut down the computer.
2Press the Novo button and then select BIOS Setup.
How can I change the boot mode?
There are two boot modes: UEFI and Legacy Support. To change the boot 
mode, start the BIOS setup utility and set boot mode to UEFI or Legacy 
Support on the boot menu.
When do I need to change the boot mode? 
The default boot mode for your computer is UEFI mode. If you need to 
install a legacy operating system, s
uch as Windows, Linux or Dos, etc (that 
is, any operating system before Windows 8) on your computer, you must 
change the boot mode to Legacy Support. The legacy operating system, 
such as Windows, Linux or Dos, etc cannot be installed if you dont change 
the boot mode.
Getting help
How can I contact the customer support center?
See “Chapter 3. Getting help and service” in the Lenovo Safety and General 
Information Guide. 
						

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Troubleshooting - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
Display problems
When I turn on the 
computer, nothing appears 
on the screen.•If the screen is blank, make sure that:
- The AC power adapter is connected to the 
computer, and the power cord is plugged into a 
working electrical outlet.
-The computer power is on. Press the Power button 
again for confirmation.
•If these items are set correctly, and the screen remains 
blank, have the computer serviced. 
When I turn on the 
computer, only a white 
cursor appears on a blank 
screen. •Restore backed-up fi
les to your Windows 
environment or the entire contents of your hard disk 
to its original factory contents using the Lenovo 
OneKey Recovery System. If you still see only the 
cursor on the screen, have the computer serviced.
The screen goes blank 
while the computer is on.•Your power management is enabled. Do one of the 
following to resume from sleep mode:
- Press any key on the keyboard. (Notebook mode 
only) 
- Press the Power button.
- Press the Windows button.
- Press F9 (  ) to confirm whether the backlight 
of the LCD screen has been turned off.
 Sleep problems
The critical low-battery error 
message appears, and the 
computer immediately turns 
off.•The battery power is getting low. Connect the AC 
power adapter to the computer.
The computer enters sleep 
mode immediately after 
Power-on. •Make sure that: 
-The battery is charged.
-The operating temperature is within the acceptable 
range. See “Chapter 2. Use and care Information” in 
the Lenovo Safety and General Information Guide
.
Note:If the battery is charged and the temperature is within range, have the computer serviced. 
						

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Chapter 4. Troubleshooting
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 
t
he 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 t
he 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.  
						

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31
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.
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 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 usin
g 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. 
						

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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
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. AA00
©Lenovo China 2013