Need help with Headset

I can honestly say I, (at least I don't think so), have never seen a laptop with just 1 jack. There's always been 2 next to each other, one for mic, one for audio. Go to Control Panel - Sound and make sure the options are directed to the relevant hardware, (Recording to Microphone, Playback to Speakers, etc). I remember when I first plugged in a 360 controller, the Sound options would all switch to that automatically....Luckily they fixed that and when I plug everything in, it all works as it should do

Unless your laptop somehow has a TRRS jack (which I doubt) there ought to be two plugs - one for headphones and another for the microphone. Look at the logo or little icon by the jack - it should be a headphone icon or a microphone icon.

If for some reason your laptop really doesn't have a microphone jack, then pick up a USB mic and use it.

I had the same issue, my laptop comes with the combo jack. Actually I've bought an adapter like 3 days ago. It works fine.

But I remember that when I myself have been looking for suggestions, I've seen some guy's post about problem similar to yours, in the end he figured out that the adapter will only work if it's plugged in an oddly specific order, i.e. you turn the PC on, then plug the adapter, than the headphones, then the microphone or something like that.

Have you considered getting some USB headphones?