My DVR is refusing to record some shows and I'm unable to determine why. For example, when using the Guide and attempting to record a show, it will go through the steps and appear that it is going to record, but then the Guide will have a red no entry (a red circle with a slash through it) symbol ne

My DVR is refusing to record some shows and I'm unable to determine why. For example, when using the Guide and attempting to record a show, it will go through the steps and appear that it is going to record, but then the Guide will have a red no entry (a red circle with a slash through it) symbol ne