So I conclude that you do want sound to come out of the front panel jacks for your headset. Further, any other sound (like, a speaker set) should come out of the rear panel jacks from your mobo, and you do NOT want sound sent to your monitor in either fashion.
So that's easy. You simply need to re-connect the front jacks to the mobo "Front panel Audio Connector" (10-1 pin AAFP) so the signals from the mobo audio chip can be fed out the front jacks. THEN you must change Windows' Default Sound Playback Device. Go into Start ... Sounds and find where that device is shown, There is a drop-down mini-window that likely shows it is using the video card's system. Click on that and change it to your mobo's system, likely by Realtek, then back out.
That will set your system to create sounds using the mobo audio chip and send them out your front panel jacks and the mobo rear panel sound jacks. BUT you could still have a problem of no sound there anyway, especially at the rear jacks. This can happen because of a feature of Realtek audio systems (the most common on mobos) called Port Re-assignment. Sometimes disconnecting and re-connecting speakers at the jacks leaves the Realtek system completely unable to send out sounds. IF you do have sounds OK from the jacks, ignore the rest of this. But IF you still have no sounds coming out of rear jacks, follow this sequence I posted in another thread.
- Most Realtek systems have a useful feature called Port Re-assignment that allows you to change which sound signal is sent out of which rear panel port. But it can cause you trouble in this situation because it demands that you give it answers, or it cuts off your sound! So we'll use that to get the rear panels audio jacks to what you need. Some of the details depends on exactly what your sound playback system is - how many speakers, for example. I have a 5.1 Surround Sound system consisting of two front stereo speakers, one front centre speaker and one subWoofer, and two rear stereo speakers, and these require using three of the output jacks, plus a jack for microphone input. I also use an earphone / microphone headset plugged into my front panel jacks.
- Arrange your system so that you can reach the rear panel and the cables / plugs to your speakers PLUS see your screen and use your keyboard and mouse. On your screen at bottom right there should be an icon for access to your Realtek sound configuration utility that allows you to set many options and run a sound test. Use that and, if possible, set it to the speaker system you have - 2-channel stereo, 2.1 sound, 5.1 Surround Sound, 7.1, whatever. Also enable the front earphone and microphone jacks if you plan to use them. You MAY not be able to set all this if your actual speakers etc are not plugged in and working yet - we'll come back to them later. Back out of the Realtek tool.
- Unplug everything from your mobo audio output jacks - the two on the front, and all the AUDIO items plugged into your mobo back panel. Reboot your machine, and it will recognize that you have nothing plugged in for sound output.
- From here on we'll be repeating a simple sequence that means you need to respond to messages on your screen, ONE item at a time. Start with the plug for your two front (left / right) stereo speakers. Plug that into the correct rear panel jack (usually light green) and watch the screen. You should see a little window pop up saying it detected that an item was plugged into that jack, and suggesting what that might be. It is probably correct, but you can NOT just ignore that and let it be. If you do not answer, it will NOT assume its correct guess, and it will NOT send out any sound there. You must answer by confirming that guess or changing it, and the window will disappear.
- On to the next thing to plug in - perhaps the plug for a front centre and subWoofer in the orange jack. Same process - watch for the window and confirm the correct speaker type you just plugged in there.
- IF you have more, as I do, repeat. When you have all your speaker items plugged in, do the microphone jack, too. Or you may be doing that on your front panel.
- When you have ALL your speakers etc. re-connected this way, go back into the Realtek configuration utility. Check and adjust the choice of speaker system you are using, and any settings for headphones. Now find the sound test tool and run that to be sure all your speakers are doing as planned. If necessary, you can adjust things like balance and volume settings. When you're done, exit the Realtek utility.
That should get your sound back to the way it was.