Black Screen

Dec 2, 2013
good morning.

I have the screen in black Xiaomi Red Rice.
It all started when I tried to lower the brightness level.

The phone starts correctly, xiaomi logo in white, then the logo appears in gold, but below the screen goes black appears.

I managed to type pin to unlock the sim (recalling the positions of screen).

Anyone know how I could reset the brightness levels. Please note that I'm with the black screen.

Thanks in advance.