Ok, after many years my Roamio is stuck a the the Welcome Starting up screen. I can't even get it to get to the flashing amber light so I can put a Kickstart code 57 to run a system repair. So, any other tricks? Yes, took out cable card, removed all exterior cables, Still can't even get...

I upgraded the hard drive in my Roamio TCD846500, thinking it had failed. When that didn't solve the problem, I thought it might actually be a bad wall wart. Now I'm not sure what's going on. Please excuse the long post, but I want to thoroughly explain my process in anticipation of the...