I'd been hashing away happily, mining Eth, with my 4x RX 580 rig. It shut off for some reason and now when I start it up it shows the Asus screens, but then Windows won't open, it just shows a black screen. Is there anything I can do in the UEFI or anything, instead of just trying to reinstall Windows from a usb stick?
Please state your complete setup
how to ask help for troubled GPU ->
https://bitcointalk.org/index.php?topic=3191707.0a lot of probable reasons
might be a riser on the GPU connected to your monitor etc.