So a few hours ago I started a thread about my M-Card showing as not installed after 3 or so weeks with no issues since I had my Roamio. Now a 2nd issue has sprung up.
I know tonight I got the new software that was just released, I had rebooted successfully, I was just checking the Tivo to see if by some miracle my M-Card may be working now and Tivo was stuck on welcome screen, something made it reboot. I pulled power cord, plugged back in and it ran the animation until the welcome screen and it's stuck there again.
EDIT - Resolved. Bad M Card.