This morning I did try to turn on my Tivo Premiere and i only saw black screen. I did unplug it and I saw Tivo Logo saying Welcome Starting Up...then is turned to Almost There Just a few minutes more....and after that goes to black screen? On my Tivo box i have green light on, and between Welcome Starting UP and Almost There Just a few minutes more I saw yellow light blinking on my Tivo. But now I am just stuck on the black screen??? What could be wrong?