Remove Priiloader? Can't Return to Wii System Menu?

I attempted to mod my wii yesterday by following these instructions: http://www.youtube.com/watch?v=AnFkZkEhBjI It didn't work, so now I just want to remove all of the modded files from my wii and return it to normal. I uninstalled everything I could from Letterbomb, and then deleted the homebrew and usb... show more I attempted to mod my wii yesterday by following these instructions:
http://www.youtube.com/watch?v=AnFkZkEhBjI

It didn't work, so now I just want to remove all of the modded files from my wii and return it to normal. I uninstalled everything I could from Letterbomb, and then deleted the homebrew and usb loader channels.

But the priiloader menu still loads on startup instead of the wii system menu, even though I have the WSM set to autoboot. I get the following message when I try loading the WSM from priiloader:

"Error autobooting system menu
the going to load IOS was detected as stub!"
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