Help me access my control panel

[AckHome]

So I had this problem where I would airplay things from my mac to my Apple TV and the footage was often laggy and choppy. Someone recomended that I disable WMM in my control panel. But when I did that my entire wifi crashed and I cant get onto it or ontol my control panel to re-enable WMM. I also tried to plug the router in and out and it still doesent work. So what do I do now?