problems with some of the Wii .wbfs files

i have an issue with some of the wii games I downloaded from vimms lair, I downloaded a few wii games and a some of them "crashed" my wii (blackscreen) and i dont know why that is happening(I tried reïnstalling but that does not seem to work), I have tried looking it up but i could not get a decent awnser to my quistion so I hoped someone here could help me.
maybe its just the games downloaded... the games in question are: Wii Party, Mario Powertennis newplay control, lego starwars the complete saga and dragon ball z bodukai tenkaichi 3.