My wii doesn't load the wii menu and shows only black screen
I installed the Home Brew channel on 4.3E wii and did everything I was supposed to do. I also installed a theme through an app called myUnify or something which was applicable only for 4.2 and 4.1 versions. After the installation was complete, I wanted to go to the Wii menu. All my wii was showing me was that a black screen. I have a backup of the factory setting files. I don't know what to do to fix this problem. Is it more of a software or hardware problem? I hope it is not a hardware issue.
Any help please?