How to fix wii settings black screen?

My wii has a version of 4.3u and when I go to the wii settings, the music fades and there goes a black screen, but the wii is still on. How can I solve this problem? I have the homebrew channel, boomii as ios, wiiflow and usb loader gx, and priiloader. After I installed a custom theme throgh the MyMenuify, the wii settings screen goes black, but everything else seems to be ok. There was a system update throgh the disk channel when I put in a game, and right after I updated it, it didn't make a difference. Please help me.