Tv 1 (vizio 24"), has 2 hdmi ports, while tv 2 (proscan 19"), has 1. I've mostly connected the hdmi to the proscan and laptop (old and new one), to watch sports (so i can watch other stuff on the vizio at the same time). Last Friday the monitor said 'no signal' on it. So I connected the tower I have to the proscan. No problems. This morning I hdmi the new laptop to the vizio. No problem.