I have headphones that only has one wire, so I ordered a 1 female to 2 male splitter so I could use the audio and mic. Before, I just used the audio by plugging the headphones straight into the back audio. I tried using the splitter and it didn't work, so I was like "oh well, I'll just use the audio only". I tried going back to directly plugging in the headphones and now that doesn't work either. The computer does not detect when I plug something into the headphone jack. Before when it worked, it gave me a notification and allowed me to choose what type of device I plugged in.