Windows 10: Line in jack and Microphone jack not working at the same time

I am trying to set up my Nintendo Switch audio to play through my PC. Previously I had used my line in port and listened to it and that worked perfectly. I recently bought a new wired headset with 2 3.5mm cables. Now I am running into an issue where plugging in my line in jack makes my microphone stop working, and my switch audio does not play. Is there a way to fix this? I have restarted the PC, swapped all cables with new ones and updated all applicable driversThank you

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microphone jack not working

So i finally decide to buy a headset, and i plugged the headphone jack into the audio jack which works,but when it comes to microphone jack it don't work.
it doesn't show that its a headset on windows 7 audio device, so i thought i'll try my case sound jacks..but i have 2 connectors on the case 1 is AC_97 and another is HD_Audio and i don't know which one i plug into i only have one F_audio connector on my motherboard,is that even the right socket to get my case audio jack to work?
Someone help me please

 

How to use microphone jack as audio jack?

My laptop ASUS K55VD's audio jack broke down. There was a bead inserted inside it then I cannot use the jack to play audio from my laptop. I am just wondering if it is possible to use the microphone jack (Line-in) to audio jack (line out)?

 

Microphone not working with combo audio jack


My laptop only has one combo audio/microphone jack, and I can't get the microphone to work at all. I just bought a new headset that came with an audio/microphone splitter specifically for the purpose of using it on this laptop. While the output works fine, the microphone input is absolutely ignored.

I am 100% positive this is an audio/microphone splitter (and not just an audio splitter) as it has 3 rings on the end of it (indicating that it is compatible with using a microphone), and one of the input jacks even has a microphone icon on it. Realtek Settings are nowhere to be found in Control Panel, and I couldn't seem to find anything in the system sound settings that would help me either.

I've already spent money on this new headset, so as you can imagine I'm pretty frustrated that this is not working, and I really, really don't want to spend any more money. Any help would be greatly appreciated.