audio jack not working

I'm currently using headphones with my newly built PC. The sound for the past two days has been perfect. Tonight, I was using the computer when all of a sudden the audio cuts out and comes back with MAJOR distortion. I'm not sure why this is happening and have already tried the following to...

Whenever I plug in a microphone into any of my audio jacks (one in the motherboard, one on the front IO panel), not a single sound is picked up. I've updated all of my drivers, checked my HD audio cable, checked the audio settings. I think it's a software problem, because when I use a USB mic...

I've had this issue for a while and it's always bugged me. I am using a USB adapter right now but I want to solve this issue once and for all. For maybe a year or so my front and back audio jacks just don't work, when I check the sound control panel, stereo mix doesn't show up either and in...