I have original factory SL disc, I can get the disc to boot up to the apple logo and the timer, then that goes away and the disc spins like 3 more times and then nothing. Ive tried the pci 1 and 1 -x code and nothing, tried the ge=no -v and it ran a bunch of code and then did nothing, -x did not work either. i am using iboot and a copy of 10.6.6 about to try with a copy of lion and iboot and see if that works. i have 4gigs of ram in, its an i5-2450m 2.5ghz cpu. kind of lost here.