Based on the timing, that sounds like the periodic HDMI Copy Protection check is failing and not recovering on a retry. Typically this is an HDMI cabling problem. Try reseating all the HDMI plugs in their sockets. Any HDMI connection in the entire signal path could be the cause, even if no problem using other Source devices.
HDMI is just friction fit, and it only takes a small shift of plug in socket, perhaps tugged by cable weight or kinks in the cable, to screw things up.
Also try turning Deep Color OFF and setting Resolution to 720p. If that works but your normal settings do not, that suggests marginal HDMI cables for the higher bandwidth settings.
With the above, I'd expect you would also have problems playing Blu-ray discs. If not, check whether the HDMI output from the player is different when playing from the hard drive. Press Info and, for the discs, Page Up or Page Down, and the bottom line will show what's going out on each HDMI output.
Last edited by Bob Pariseau; Today at 10:19 AM.