I have a Sony Vaio All-In-One PC. VPCL135FX. My Tv is a Vizio HDTV, i believe its either 2013 or 2014 model. It has 3 HDMI ports. It is not my HDMI cable because it works fine with my laptop, and my laptop detects my HDTV. My Video card drivers are up to date. I tried the (Windows) key and "P" to bring up my display options but that didn't work either. My PC has been formated a few times, so i dont know if im missing a simple software update or what. TV will not detect my PC, it just says no signal. Like i said before, my laptop works fine with the TV just not my PC. My Display options does not detect another screen. I have both Windows 7 and Linux Mint 17 installed and both OS's dont detect additional displays. I've search different forums and i can't find an answer to my problem. Please help, I would greatly appreciate it.