Hi,
My laptop was working perfectly with my TV monitor until a few days ago when I started getting the "unsupported signal check your device output " error. I am projecting from a HP laptop (Windows 8, Intel core i3) to a Sony Bravia TV via HDMI.
I have updated the HDMI audio driver on my laptop as well as tried all the screen resolutions available.
I still get the same error with a black screen on my laptop when I plug the HDMI cable in, eve if the TV is off when I connect the cable, still a black screen.
I assume this means the error must a setting on my laptop? Any suggestions?