Screen keeps going off andbon

[Chris1]

I tried to move everything to the usb drive on the bottom of the box but the drive became inject by itself and now I try a factory reset but now the screen keeps going on and off I checked the power supply and the hdmi cord 

 

 

[Emporium]

Please keep it to one thread.  You already posted the details, did not need to stat a second topic/thread.