Hacking USBloader GX issues. Black Screen / Hard Drive loading

[Ro0k1n]

Hello,
I am completely new at this and have issues using this mod.
I have installed USBloader GX and forwarder from sourceforge and have followed so many different guides on how to set things up that I'm now really confused.

The version is Rev1271 IOS249 (Rev 21010) + AHB (d2x v10 base56)
My hard drive is 500gb fat32
both loaders currently set to 249.

When using both 249 loaders I have an issues with it initializing the hard drive and it hangs.
When using loader 58 and 249 the hard drive initializes but I get a black screen when loading the games.

Any ideas what I need to do to resolve this?