If the display of your Lenovo IdeaCentre A340 22 All-In-One system is black, check to be sure that the screen brightness has not been inadvertently set to zero brightness. If the screen brightness is not set to zero, but there is still no image on the screen, press the power button to shutdown the computer and hold the power button down for for 10 seconds. Once the computer is completely shutdown, unplug the computer and wait 5 minutes. Plug the computer back in and press the power button. If the screen stays back, we recommend you contact Lenovo Tech Support for additional help at: 877-453-6686.
4 years, 1 month ago
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