Lenovo Ideapad Flex 4 User Guide

							27
Chapter 4. Troubleshooting
Frequently asked questions   - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
This section lists frequently asked questions by category.

						

							28
Chapter 4. Troubleshooting

						

							Chapter 4. Troubleshooting
29
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 properly set, 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 files 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 screen saver or power management may be enabled. Do 
one of the following to resume from sleep mode:
- Press any key on the keyboard. (Notebook mode only)
- Press the Power button.
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 self-test (POST).Make sure that:
- The battery pack 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 pack is charged and the temperature is within range, have the computer serviced. 
						

							30
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 Power button.
If the system still does not return from sleep mode, stops 
responding, or cannot be turned off, reset the computer. 
Unsaved data may be lost. To reset the computer, press and 
hold the Power button for five seconds or more. If the 
computer is still 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 pack, 
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.
- 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 4. Troubleshooting
31
Battery pack 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 five 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 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. 
						

							32
Trademarks
The following terms are trademarks or registered trademarks of Lenovo in the United States, 
other countries, or both.
LenovoOneKey
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