Brand new U400 - black screen

Hello

Just got my lenovo u400 today and super excited, however, the screen doesn't seem to work! When I turned on for the first time, I heard it starts but the screen is completely black. I try to use the shortcut key to adjust the brightness, but still nothing appears. I could see a little but very difficult. However, the laptop works very well because I plugged on the external monitor and I can see it. The screen of my laptop is defective? Please notify. Thank you.

Hi Tdinh,

Please try to use the shortcut key F10 to open the interface for the switch of display device select this laptop or an external monitor.

Zehn

Tags: Lenovo Notebooks

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