Macbook won't connect to TV via HDMI
i have a MacBook Air early 2014 and since i bought it i been using it with a HDMI cable to display the screen in a TV. During that time i was using Maverick 10.9. Just recently I switch to Yosemite OS X 10.10 and since them I'm not able to display the screen in my TV via HDMI. The Mac won't even detect the TV. Im using a Panasonic Viera and the HDMI adapter is a INSIGNIA. PS: I already check the show mirroring options. Also when the cable is connected the Mac would switch to a black screen for 1 second and return to the Build in display. TV would stay in a black screen at all times even when connected.
MacBook Air, OS X Yosemite (10.10), none