i had the same prob many times before. but i just needed to restart the wii after that it was fine again. but if you say this just happend when your sd card is in maybe there is a prob with the boot.dol? maybe just make a backup of your sd card. format it. download the hackmii, bootmii or whatever you have in the root of your card again and try then.

This post has been edited by Fr0zen, Tue, December 1st, 2009 at 05:51