yesterday, my boyfriend tried to install elementary because I use to work with elementary and he wanted to try. But he couldn't use his keyboard shortcut for the sound (fn + f10 + f11 + f12). Mine worked but not his. So I was trying to find out why when I made something wrong : now, none of mine are workinf neither while they used to work nicely! I don't know what have I done. I tried to install new drivers but I don't know a thing about that XD. Also, fn still works with f6 or f5 for the screen light for exemple... Can you help ? thx!