Your TiVo DVR may not have all its program information yet. After initial installation, the TiVo DVR downloads some program information from the TiVo Service. More program information becomes available after the next time the TiVo DVR connects to the TiVo Service. After 24 hours, full information (up to two weeks) is available.
If the TiVo DVR loses power while its organizing program information, the organizing process will stop until it makes a successful connection to the TiVo Service, and then it will restart. If your TiVo DVR lost power while it was organizing program information, you can get it to start organizing again by starting a connection to the TiVo Service. (From TiVo Central, select Settings & Messages > Settings > Network > Connect to the TiVo Service Now.)