Black Screen with Mouse Cursor

[eaglepride605]

I was able to install zephyroth 10.5.2 rev.1 using 9.2 kernel, nforce 2,3,4,5, nvidia kexts, nvidia 512mb, and mbrit installs perfect loads and then just before the logon screen/setup screen the screen goes black with a mouse cursor, the mouse cursor can be moved but nothing else happenswhy is the happening, how do i fix it so i can run mac, thanksasus m2n-sli deluxeamd X2 4200nvidia 7900 gtocorsair 2gbwd 150gb satai can get everything running if i boot in -x safe mode but if i dont boot in safe mode it still has the black screen with movable cursor