Asus M4A78LT-M no HDMI output

[Gelly54]

Hello, my problem is with the Asus M4A78LT-M which i built for my friends father. He is saying he is getting no HDMI output to his TV, i did check through VGA when i set it up with no problems.

So just wondering if anyone has had similar problems or know of any answer to this problem, could be a simple bios setting or something

Thanks for your help

 

[Surveyor]

Is the output resolution set to something the TV can display?