My TiVo Premiere began to act oddly last night. In the middle of watching a program it locked up and both red recording LEDs lit up. Afterwards the machine sat on the menu giving a green circle and did not respond to the remote. This evening I removed power to the unit hoping it would reboot. That hope has been rewarded with the unit cycling at the "Welcome. Starting up." screen. This screen displays for a short time, the system flashes all of the LEDs and reboots. So far no end has been found. Is there anything I can do besides ship it to some service center?