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 

First of all the integrated drive location on the bottom of the U5, is NOT a USB drive bay, it is for a SATA drive.

Did you try removing the drive all together to see if it behaves the same ?

Is the drive a traditional mechanical drive, or an SSD ?  I find that traditional mechanical drives tend to get extremely hot, since it is a non-ventilated compartment.  I strongly recommend using a decent quality SSD drive, which typically get just slightly warm.  When the drives get too hot, they will often auto-eject.

You said you checked the power supply.  Is it the original power supply which was provided with the U5 ?  The U5 uses a 12V power supply, compared to most other buzz boxes which us a 5V power supply (xrs4900 is another exception).

 

 

Yes I tried removing the drive and it still the same thing and use I am the 12v cord 

I have never seen the box do this 

everything?

what was everything?

have you tried a hard reset?