Check the connection on your motherboard first then remove your sound driver and install the newest version. If no change... do you have another case to test just the audio with? Sounds like a bad port, likely caused by tripping over, ripping out a cable while connected to it.... If you do not have a case to test and are willing to invest a bit you could order something like this to test: Amazon link: http://a.co/1eFDPgm