Hi, My TiVo HD was working fine last night. Today, live TV seemed to be working fine. I hit the TiVo button to get to TiVo central, and clicked on "Now Playing." The Now Playing list was completely blank, though I could scroll up and down. I could not select anything, nor would the unit respond to remote control commands to go back to TiVo central or live tv. The amber light, however, did come on when I used the remote. Eventually it went back to live TV. I pulled the power and restarted the TiVo, but the problems remain; I can't even get into Messages and Settings; when I try to, it does eventually come up with the menu, but the unit stops responding to the remote and eventually restarts. Unfortunately, TiVo Desktop can't connect to the device to pull my programs off. Does anyone have any troubleshooting advice before I buy a new hard drive?