Hi All. Newbie on this forum! Im having an issue connecting my Macbook Pro 15" i7 2010, to my Samsung HDTV. Up until last week, it was working fine. I connected it via a MiniDisplay Port to HDMI. I used to just plug and play! I vageuly remember I either put laptop on standby or shutdown whilst it was connected to TV, and then unplugged it, and am guessing it somehow messed up settings to show its still connected to TV after I powered it back on. But ever since, everytime I connect to my TV now, screen is either blank, or says "Mode Not Supported", or even says "No Signal". ?? Please help!!