HDMI is not recognizing the Vizio TV as addiontal monitor. Here are my computer details. I have tried using my friend's laptop which also has a HDMI port and his computer was able to recognize TV as an external monitor. I have tried everything like, (Fn+F4), adjusting the mobility settings etc. None of them worked on my computer. Neither the video nor audio are being detected in my laptop. Can anyone from HP support help with this problem ?
Laptop: HP Pavilion DV6
Product number: WH770AV