The HP ENVY x360 Convertible 15m-bp1xx I've had for two weeks. All applicable driver and OS updates have been done, per Support Assistant.
Everything seemed to be working fine, Today however, for the first time I connected a Vizio 50" 1080p flatpanel using a known good High Speed HDMI cable, and I cannot get any video signal to the screen. It doesn't matter if I try to duplicate, extend, or use "only display 2" mode, the TV continues to show "No Signal". I've tried everthing seemingly available in the "Display" settings to get this to work, to no avail.
1.) The TV is absolutely set to the correct input (two separate HDMI inputs were tested to make sure the one I first tried wasn't itself bad).
2.) The audio setting actually shows the Vizio as a selectable audio destination. So, the laptop "recognizes" the Vizio via the HDMI connection. But, when I switch from the Realtek Speaker/Headphone audio selection, to the listed Vizio device, the audio I'm listening to simply goes silent. Adjusting the Vizio destination volume slider to 100 does nothing.
This really seems like a driver issue, however I've re-installed the "latest" display driver twice, to no avail.
Basically stated, the laptop "knows" an HDMI flatpanel TV has been connected, but it isn't sending audio or video to it.
Help!!