On my MSI laptop I have a pair of headphones. One day the right ear of the headphone straight up stopped working. I've tried it on my other PC and it works fine, it doesn't have anything to do with sound mixer or anything. One thing to note is that it happened after I opened my PC and kinda messed with things in there. Also to note Driver Easy says my realtek audio driver is not updated. Please help, I'm not allowing myself to play competitive games because hearing is so important.