I just downloaded the Rock Band 3 ISO, and when I go to run it, I just get a black screen. I can run New Super Mario Bros just fine on the emulator, but not Rock Band 3. I have a GTX 760 and i7 4770k in my computer. Can someone help me? Thanks!
first look the game up on the dolphin wiki, that tells you what settings to try. The fact you can run a different game is unfortunately irrelevant, settings vary between games and some games run better than others, and some don't run at all.