Sound not working Bootcamped Imac, Halp.

I recently boot camped my Imac maybe a week ago, everything went smooth and the sound played perfectly until a few days ago when i did one the windows updates. After that windows update i haven't been able to hear music from YouTube videos, songs etc. But I can hear all windows sounds when in the League of Legends client i can hear its sounds (But not ingame music), I've tried updating and re-installing my drivers through the ones given in the Imac Boot camp drivers but no luck their that i have seen. I can also hear everything and anything when i have my headset plugged into my keyboard my mic also works while in my keyboard to but when in the back of my Imac they don't seem to want to work. Once again this all began with the windows update. I've looked around the best i can and really have no idea whats going on. Any help apriciated.

Yeah they're all up to date :c