Lenovo Z485, Z580, Z585, Z480, Z380 manual Computer screen problems, Screen is blank

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Chapter 5. Troubleshooting

The computer does not return from sleep mode and the com- puter 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	•	Make sure that:
distorted.		- The display device driver is installed correctly.
		- The screen resolution and color quality are correctly set.
		- The monitor type is correct.
Incorrect characters appear on	• Did you install the operating system or programs correctly?
the screen.		If they are installed and configured correctly, have the
		computer serviced.

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Contents Lenovo IdeaPad Z380/Z480/Z485/ Z580/Z585 Regulatory Notice First Edition December Copyright Lenovo Contents Page „ Lenovo IdeaPad Z380/Z480/Z485 Getting to know your computerTop view „ Lenovo IdeaPad Z580/Z585 Getting to know your computerCap sensor buttons Built-in microphone Touchpad Left-side view „ Lenovo IdeaPad Z380 „ Lenovo IdeaPad Z480/Z485/Z580/Z585 Right-side viewFront view „ Lenovo IdeaPad Z380 Bottom viewBattery latch manual Battery pack „ Connecting to the power „ Configuring the operating systemLearning the basics „ Reading the manualsPutting your computer into sleep state „ Shutting down your computerLearning the basics „ Checking battery status „ Charging the battery„ Removing the battery pack „ Handling the batteryUsing the touchpad Touchpad Touchpad buttonUsing the keyboard „ Numeric keypadLenovo IdeaPad Z380/Z480/Z485 Lenovo IdeaPad Z580/Z585„ Function key combinations Lenovo IdeaPad Z380/Z480/Z485 Lenovo IdeaPad Z580/Z585Fn + Esc Fn + F1 Fn + F2 Fn + F3 Fn + F4 Fn + F5 Fn + F6 Fn + PrtScFn + Home Fn + End„ Using memory cards not supplied Connecting external devicesInserting a memory card Removing a memory card„ Connecting Bluetooth enabled devices on select models „ Connecting USB devicesEnabling Bluetooth communications on your computer „ OneKey Rescue system button a Special keys and buttons„ Cap Sensor buttons Standard mode Thermal management button fPerforming dust cleaning System status indicators „ Attaching a security lock not supplied „ Using VeriFaceSecuring your computer „ Using passwords Connecting to the Internet Wired connectionConnecting to the Internet „ Software configuration„ Hardware connection Wireless connection Wi-Fi WiMAXSoftware configuration Hardware connection„ Introduction OneKey Rescue systemOneKey Rescue system „ Creating a recovery discs OneKey Rescue systemTroubleshooting Frequently asked questionsTroubleshooting Where can I find warranty information?Troubleshooting Display problemsKeyboard problems Password problemsSleep or hibernation problems Computer screen problems Screen is blankSound problems Battery problemsHard disk drive problem Startup problemTroubleshooting Other problems RespondReplacing the battery pack Appendix A. CRU instructionsAppendix A. CRU instructions Handling a hard disk driveAppendix A. CRU instructions Lenovo IdeaPad Z380 Lenovo IdeaPad Z480/Z485/Z580/Z585 Pull the tab in the direction shown by arrow d Take out the hard disk drive secured in a metal frame e Appendix A. CRU instructions Replacing memory Appendix A. CRU instructions Appendix A. CRU instructions Replacing the wireless LAN card Appendix A. CRU instructions Removing the optical drive Setup Poster User Guide Trademarks Page New World. New Thinking.TM