Installing Bootmii: Black screen

Hello everybody,

I try to install BootMii on my LU64/LEF121 Wii.
I don't have HBC.

Few weeks ago I copied the BootMii installer to a SD card and run the installation but I get a error messge.
When I try to run the BootMii installer again, I get a black screen. The installer will not start. The Wii freeze completely.

Can anybody help me please??

This should be in the "Getting Started" forum. please may a mod move it? can you give me some more details? how far do you get before it freezes?

What is the error message?