New PC HDMI to HDMI not working

The PC was built at the shop all i had to do was put the cables in and switch on. When i did this i had a HDMI to HDMI lead in the graphic card to TV and nothing came on the TV. I tried sevral times with the HDMI lead and tried different ports on the TV and still no good. The HDMI lead i used for my old PC and still use it for my PS3 and works fine. I then then a DVI to HDMI and it worked with no problems and the picture came on with sound also. I think the graphic card thinks i have 2 monitor as when i put the HDMI lead in at the same time of the DVI to HDMI the screen flickers and goes to a blank desktop and if i move my mouse to the edge of the right screen it looks like it kepps going rather then stopping at the edge like it does. Any help would be gratefull

Intel i7-3770K

Gigabyte Z77X-UD3H

Corsair Vengeance Low Profile 8GB Kit

MSI NVIDIA GeForce GTX 670

Sandisk Extreme 120GB

Seagate Barracuda 2TB 7200Rpm

Antec P183

LG GH24NS90 (CD drive)

Noctua NH-D14 Cooler

Antec High Current Pro HCP-850

Windows 7 Home Premium 64-bit

thanks for any info if you can help.

Update graphics drivers

So you have more then one output connected in your graphics card?

All drivers upto date and i only have one cable connected at one time as i no that having 2 leads in at the same time will have errors. Tomorrow going to try on the TV down stairs and if that works i no its my TV up stais what can not see the graphic card.

Update graphics drivers

kraken2109

[QUOTE="kraken2109"]

Update graphics drivers

theking52_TDK

All Graphic drivers up to date and i even uninstalled and installed the fresh but still no look. But i sent the shop a message today asking for any info what they think and this came back

Most graphics cards don't default an output via HDMI, this is generally enabled after first boot using the graphics card's management software (NVIDIA Control Panel for Nvidia Cards and Catalyst Control Centre for AMD Cards) however you will only get a display once the system boots into Windows and not during POST.

But the thing is ive managed sound to come out of the PC and when i turn the PC and windows loads it even plays the windows tune when loaded but no picture. I carnt find in the control panel to turn the HDMI on so can any one here tell me where it is in the control panel please. thanks.