You could try flashing the original disk with my files and instructions and then with those from the other thread too. If nothing works and you still have the black screen with the original disk and the two different backups there probably is some hardware issue.I tried different hdmi and tv still the same issue. I downloaded easeus data recovery and it's scanning right now and sees files on the sshd. However, I am still getting black screen and I don't understand why the 512gb wouldn't work after following your steps. Shouldn't I at least get the nvidia logo on the screen if no hd is detected? Easeus is going to take a min to scan the entire sshd I don't know what I am going to end up with but if I can recovery files I am thinking about backing the hard drive up but I don't know if that's an option with easeus. And I guess if easeus is able to see files on the sshd it's not toasted?