What happened to your Solo 4K?
Was their a power surge, a lightning strike, or did it just stop working?
It doesn't look like you have anything connected, to the rear of the receiver, not even your co-ax cable, which is good, but does it have an internal hard drive?
Your receiver isn't even getting to the boot up logo, or loader information.
Your video is very dark, but the power cable looks strange, as if there are 2 separate cables, going to your receiver, it doesn't look like the ones, I've seen, in Solo 4K images, is this the original power cable, or is it just the picture?
Your receiver seems to load the same as my VU+ Duo 2, using the front USB port, and holding down the power button, behind the flap, you could try using a rear USB post, a different USB stick, or even holding down the power button, once you've switched it on, at the rear, but I think there might be something else wrong.
If it is still in warranty, contact your supplier, explain the problem, and ask them to check it out.