My Tv wont show Pc

[Tangos]

Hello
I have a custom made pc fresh , i connect the right hdmi from tv channel and port. I got 2 different Lgs tv in the house no one respond.i go to my friends house and i connected to his monitor and all worked fine.
What i can do to fix my lgs to work with pc ?

 

[Tangos]

I find the solution for me.i had connect to the motherboard hdmi i switch it to the graphic cards and work like a charm