![]() Try connecting to an external monitor to your laptop, then press function key (hotkey) to toggles between laptop display and the external monitor to ensure the display is normal on the external monitor.Please try to press the function key (hotkey) to adjust the brightness to ensure there is sufficient brightness to see the display on the screen.Note: The hotkeys functions may be different based on different models, please refer to the User Manuals. Please try to press the function key (hotkey) to turn on/off the display to ensure there is no response on the screen.Solution #2: (Power light is ON) "Power light is ON" means the power cord and AC adapter are working, but the device fails to boot due to the dysfunction of other major components. Re-install the battery (for removable battery models) and connect the AC adapter, then try to restart your laptop.(These models need to plug in the AC adapter to do the Hard reset process.) Note: Please don’t remove the AC adapter for ASUS laptop TP420IA and UX425IA model. Please remove the AC adapter, then press and hold the Power button for 40 seconds to do Hard reset.There is a removable battery pack in the image (C) below as an example. Note: For models that cannot remove the battery pack (non-removable battery models), please ignore step (6). Please remove the battery (for removable battery models) and directly use the AC adapter to charge the device.Before the dysfunction occurred, if there were any expansions on the hard drive or memory, please remove them first.Please remove all portable external devices, such as USB devices, memory card, internet cable, HDMI, CD-ROM, etc.If any damage is found, try another AC adapter. Please check if there's any damage on the AC adapter cable.Note: The AC adapter may be different based on different models, please refer to the User Manuals. ![]() Please check if the AC adapter plug is loose (marked in the below image: A-power cord plug, B- outlet side plug, C- NB side plug) or try to plug into different outlets.Please be sure to use AC power adapter and AC power cord with the proper specification supplied by ASUS.Solution #1: (Power light is OFF) "Power light is OFF" means there's no power supply from the ac adapter or major components might be abnormally working and the device fails to boot. ![]() (marked in the red square in the image below) The power light is the indicator why your laptop does not power on. ![]()
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