Red light in headphone jack -- Any uncommon solutions?

My question is in the title. I have tried nearly anything I can find from this forum, including the following:

• Using an air duster
• Updating drivers, uninstalling and then restarting drivers.
• Taking a toothpick/tissue paper/paper-clip/etc. and jiggling it around.
• Plugging the headphone jack in and out.
• Restarting
• Turning up the volume as plugging earbuds into the headphone jack.
• Troubleshooting

It is important to note that my iMac, although an iMac, is running Windows 10 instead of the typical Mac OS. This is not on boot-camp, my entire computer is this operation system.

I am positive the sound works, because whenever I boot my computer up, it has the boot up noise. Once the computer boots up however, the red light flashes on again and stays that way. I am wondering if this is from a driver issue. I haven’t been able to find a proper driver that fixes it though.

When I click the speakers, the output is named as following:

“Digital Audio (S/PDIF) (High Definition Audio Device)”

I have no option to change this, as this is the only output available.

Any help with this is much appreciated!

My last resort is to be buying an audio dongle.