Sound no longer working after graphics card installation

Okay, so my problem is:
I recently added a graphics card to my windows 8.1 PC. The card itself works fine (a GTX 750Ti), but since installing it my sound no longer works from either port. Things I have already tried:
Rebooting (obviously)
Taking the card out and then replacing it
Going through all the control panel audio settings (more on this later)
Disabling the HDMI audio on the card
Trying different (provably working) speakers and headphones
Updating/installing drivers (not that you need them for headphones)
The "playback devices" screen declared that nothing whatsoever is plugged in (it is). I'm concerned I might have damaged something during installation, but nothing seems obviously damaged, and I would have expected static to either do no damage
or wipe out the entire motherboard. The back port is working, so it isn't the cable. My monitor output is HDMI (with no speakers on the monitor), if that makes any difference.
Penny for anyone's thoughts?

The back port is working, so it isn't the cable.
I’m confused as to what this means. If you have audio via the ports on the back of the computer but not in front ports you may have damaged the front audio cable or connection on the motherboard
or at the front ports. Find the HD Audio (or AC’97) port on your motherboard and verify that the cable is connected and intact, then follow this cable forward to your front audio ports. If you stressed this cable by tugging or pushing, it could have damaged
the connection to the front ports. Sometimes these ports are connected by a header like the motherboard and this connection could have come loose.
Brandon
Windows Outreach Team- IT Pro
Windows for IT Pros on TechNet

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graphik wizard wrote:
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Message was edited by: Rickd3333
Message was edited by: Rickd3333

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