My Gigabyte Z77X-UD56H WiFi motherboard was running great with Windows 7 Professional, with sound, until I upgraded the video by installing a Gigabyte GEForce GTX 660 (GV-N660OC-2GD). After installing the video card, I no longer got sound through either the rear speaker jack or through the front headphone jack (or anywhere else,) where both worked before.
I’ve read of problems with NVIDIA HDMI driver’s hi-jacking the sound, and have done the following:
•Ensured the Sound “Playback Devices” have the “Speakers” selected with the green checkmark.
•Disabled the NVIDIA HDMI Output devices, including Port 0 to Port 3.
•Uninstalled all the audio drivers I could – NVIDIA and Realtek - to have them re-install automatically.
•Checked the BIOS to ensure that onboard sound is enabled.
Some things that would normally generate sound (typically a beep or one-off sound, rather than continuous audio or music,) cause a click/thump through the speakers .
If I play sound (streaming radio) and open the “Playback Devices,” I can see the bar-graph for “Speakers” bouncing up and down – presumably with the sound, though I can’t hear anything.
My monitor is connected to the video card with DVI. I tried pulling out my new video card and just going back to the built-in. That worked fine for video, but my audio didn’t return.
I’ve been working on this a week and would appreciate any input. HELP!