Lenovo IdeaPad S310 User Manual page 40

Chapter 6. Troubleshooting
The computer does not
return from sleep mode and
the computer does not
work.
Display panel problems
The screen is blank.
The screen is unreadable or
distorted.
Incorrect characters appear
on the screen.
36
• If your computer is in sleep mode, connect the AC
adapter to the computer, then press any key 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 4 seconds or more.
• Do the following:
- If you are using the AC adapter, or using the
battery, and the battery status indicator is on, press
F12 ( ) to make the screen brighter.
- If the power indicator is in blinking, press the
power button to resume from the Sleep mode.
- If the problem persists, follow the solution in the
next problem "The screen is unreadable or
distorted."
- Press F9 ( ) to confirm whether the LCD screen
has been turned off.
• Make sure that:
- The display device driver is installed correctly.
- The screen resolution and color quality are correctly
set.
- The monitor type is correct.
• Are the operating system or programs installed
correctly? If they are installed and configured
correctly, have the computer serviced.