If the beginning of the program did not record, you may have tuned in after the program had begun. If the end of the program did not record, it could be your DVR reached its content storage capacity. Another reason could be loss of power or digital TV signal during the recording.
Does my DVR record any of the menu bar, on-screen program guide, audio volume changes or anything else that appears on the screen when I am using my remote control?
Yes. Your Parental Controls will restrict what is viewed or recorded. If you schedule a recording for a program on a channel that is blocked, the program will record, but the video will not appear and the audio will be muted. You will need to enter a PIN to view the program while it is being recorded.