My MacBook Pro has stopped detecting my 40" Samsung Plasma HDTV.
I've tried basic troubleshooting, like powering down my computer and TV - and unplugging the TV - and then powering both back on with the cable connected. None of the basics seem to work. I think the settings on my computer may have been inadvertently changed when I closed my MacBook Pro whilst watching a video to cause this, but I do not know how to check this or change it back. Detect Displays in system preferences - displays does not work. I have yet to reset the PRAM and the SMC, but I'm noticing in my research that this doesn't always work. Any other working solutions out there to this problem, or am I doomed to be without video on my TV?
MacBook Pro, OS X Mavericks (10.9.1)