I have a first generation chromecast going to an old VGA display (eMachines LE1987) through an HDMI->VGA adapter. The cast home screen shows up no problem, but when I start a cast, the screen shows noise snow and the audio is just digital pops for a minute or two. After a while, the cast suddenly shows up fine and lasts until switching to a different app to cast. Googling, I see that chromecast wouldn't be expected to work through an adapter to VGA because HDMI is encrypted to prevent copying (HDCP), and both sides have to be licensed to decode the signal. But if that is the problem I'm having, I wouldn't expect it to work at all. Is HDCP in fact my problem? If so, why does it work after a few minutes? And is there any way to eliminate or shorten the wait?