No HDMI output

Hi,

Since a lot of my pc problems I solve by searching this forum as well, I turn to you guys with my latest problem for which I can not find an answer.

There is no output on my HDMI port and I wonder if there is a way to check if it is a hardware problem?

I have new pc (win7, ASUS gtx660) and was trying to get HDMI out to TV. I couldn't get pc to list the TV as display option (within Win7 and NVIDIA app). I tested with two HDMI cables and in addition with two TVs. But later I discovered that I don't get picture to my monitor via HDMI either (DVI and DP work perfectly). Since I see people are having a lot of problems with HDMI to TV connection with Win7, there might still be a driver issue (even though I updated everything, including graphic card BIOS).

I've had a hardware failure recently - USB 2.0 ports on motherboard failed (I had to replace it) and laser jet printer failed at the same time (was connected to USB 2.0 ports; printer board was replaced). Still don't know what was the initiating event.

Thank you so much for your help!

 

- Yes, OS is up to date, including SP1.
- I have Win7 64
- I was swapping between input on all devices, so no problem there.
- As for the driver: The pc is 6 months old and the hardware failure happened a few weeks ago. At the time I just replaced the motherboard w/o reinstalling OS. But I later had problems with HDD and experienced occasional blue screens. Finally I had the OS reinstalled yesterday. For the graphic card (GTX660-DC2O-GD5) the latest NVIDIA driver was taken from ASUS website that you linked to. I even updated the card's VBIOS with the tool available from ASUS. So, I don't think your recommendation would help.

From the beginning the HDMI port worked, I could extend desktop over to TV. But at some point it stopped working. I had to use "force TV" from NVIDIA app to enable TV to be recognized by pc. But later that didn't work either. Now with fresh install I believed that it would again normally work.

I am now thinking to overcome this by using DVI-D to HDMI adapter to get at least picture to my TV. But I am still concerned that there is something wrong with the graphic card. I could replace it though, it's still under warranty.

Thank you for answering!