I have a Dell 3620 with a AMD FirePro W4100 Graphics adapter for 4 mini display ports, I'm trying to run 1 LG TV 60'', plus a Proscan TV 40" and (1) 23" Asus Monitor from the graphic card but when I hook up the (3) HDMI cables the Proscan goes out, I tried a HDMI booster on it already and I'm able to run (1) TV and the monitor only.