Just upgraded from a nvidia gtx 250 to a gtx 760 and when sending the signal via HDMI to my 55" Dynex tv, the sound cuts out intermittently, and just after the sound cuts out, the input info displays on the screen like I had just changed inputs. The irritating thing is that I had the same issue with the info box popping up randomly with my 250, and there was a setting tweak or something that I changed on my PC that solved it (obviously not the audio since that card didn't send HDMI sound, didn't even know that was in the mix), but it was enough time ago that I neither remember how I did it or can find the website that helped me in the first place. And just to get all the too-easy answers out of the way, graphics (GeForce experience) and audio drivers are up to date, HDMI cable is good, TV settings are good, have run it as primary display and as extended and duplicated desktops with no change. I have been scouring the interwebs for hours and am now hoping to engage the assistance of those with greater geek skills than my own to get things right again. Not sure how I'd do it, but at this point I'd be willing to send a case of beer to whoever has the magic answer.
Summary
Operating System
Windows 7 Home Premium 64-bit SP1
CPU
Intel Core i7 960 @ 3.20GHz 40 °C
Bloomfield 45nm Technology
RAM
11.0GB Triple-Channel DDR3 @ 534MHz (7-7-7-20)
Motherboard
ASUSTeK Computer INC. P6T SE (LGA1366) 33 °C
Graphics
VX2252 Series (1920x1080@60Hz)
HDMI (1920x1080@60Hz)
4095MB NVIDIA GeForce GTX 760 (Gigabyte) 32 °C
Audio
NVIDIA High Definition Audio
Summary
Operating System
Windows 7 Home Premium 64-bit SP1
CPU
Intel Core i7 960 @ 3.20GHz 40 °C
Bloomfield 45nm Technology
RAM
11.0GB Triple-Channel DDR3 @ 534MHz (7-7-7-20)
Motherboard
ASUSTeK Computer INC. P6T SE (LGA1366) 33 °C
Graphics
VX2252 Series (1920x1080@60Hz)
HDMI (1920x1080@60Hz)
4095MB NVIDIA GeForce GTX 760 (Gigabyte) 32 °C
Audio
NVIDIA High Definition Audio