have you got a USB stick plugged in with the modes installed ? you need this 
when the ETC logo is displayed, do you see any messages about loading modes at the bottom of the screen?
anyway, what I would do initially, is get a USB stick, format it to FAT32,
and put JUST the factory modes on it, as described in the ETC manual
(this will handle the case that the the USB stick is some how corrupt, and you have a currupt mode which is failing to start)
if that doesnt work,
it might be the sdcard image is corrupted, in which case Id rebuild the sdcard
you can get the images from here:
you will need an sdcard reader for your computer, then simply
eject the sdcard from the ETC, put in reader connected to computer
downloaded image as above
download and run etcher.io
select image you downloaded and it’ll write it to sdcard
if after that, its still doing the same thing, then it could possible be a hardware issue…
either usb stick (try another), sd card (try another) , ETC (return it 
)
its unlikely the ETC, but you never know…
id also contact the seller and talk to them, did it work before it was shipped?
and also let them know your going to try to reinstall the software, but if that doesn’t work your going to return it…