I've recently purchased a Plantronics .Audio 355 Multimedia Headset for basic PC gaming. The headphones part works great but the microphone just doesn't work at all. When I input the microphone jack of the headset into my computer, my computer knows its connected but and will say it's available but when I try configuring it by speaking the given sentence, nothing happens, it's as if it wasn't connected. I tried installing Realtek drivers but every time I do, they don't do anything and basically get overrided by"IDT High Definition Audio CODEC" and that's the only one that ever shows up. I've been trying repeatedly and in the whole thing, I must have accidentally deleted something because now the Stereo Mixer isn't showing up and the rear headphone jack has stopped working.
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Below are pictures:
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