You did not mention what model Tivo you have and how things are connected.
You might try to restart by pulling the power cord, otherwise there is not enough info to help.
S1 (Recycle heaven)
Series 2 (PLS)
TiVo HD 1Tb (OTA, PLS)
Do the 3 R's to be GREEN, Reuse/Recycle/Recharge and RECHARGE the earth!!
The TiVo Apocalypse begins on Sat 2013 Feb 16 00:00 GMT!