Lenovo IdeaPad Z485 Ideapad Z380, Z480, Z485, Z580, Z585 User Guide V1.0 (Engl - Page 40
Troubleshooting, Computer screen problems, Fn + F2
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Chapter 5. Troubleshooting The computer does not return from sleep mode and the computer does not work. • If the computer does not return from sleep mode, it may have entered hibernation mode automatically because the battery is depleted. Check the power indicator. • If your computer is in sleep mode, connect the AC adapter to the computer, then press any key or the power button. • If your computer is in hibernation mode or power-off state, connect the AC adapter to the computer, then press the power button to resume operation. Note: 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. If the computer is still not reset, remove the AC adapter and the battery. Computer screen problems The screen is blank. • Do the following: - If you are using the AC adapter, or using the battery, and the battery status indicator is on, press Fn + ↑ 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 persist, follow the solution in the following problem "The screen is unreadable or distorted." - Press Fn + F2 to confirm whether the LCD screen has been turned off. The screen is unreadable or distorted. Incorrect characters appear on the screen. • Make sure that: - The display device driver is installed correctly. - The screen resolution and color quality are correctly set. - The monitor type is correct. • Did you install the operating system or programs correctly? If they are installed and configured correctly, have the computer serviced. 36