Black screen on USB loader GX when I load a game

[Itz_monarovic]

Hi, i have just installed with modmii all the channels I need for play my favorite games, on USB loader GX when I try to open a random game, the screen freeze with black color, how i can fix this problem? I try multiple solution looking the other people problems but I can't fix anyway

 

[Sypherone]

USB-Loader GX Troubelshooting guide

 

[Itz_monarovic]

Thank you