Blank Screen, No sound, unable to switch to D3D

[divu]

I just see a blank screen whenever I'm trying to boot up Wii Sports Resort or Windwaker. This isn't a problem with my roms, they've worked before, but all of a sudden just stopped. I tried clearing my ShaderCache, it didn't work. I tried switching from OpenGL (which I don't have, since I'm on Mac) to D3D, but can't find how to. If it is any help at all, the last time it worked was when I recorded it with OBS, so if that helps at all, take it. I appreciate any help that I get, Even if it doesn't work. Thanks!