So I've successfully installed Mountain Lion on my laptop, so I'm pretty certain it's not the install media. Here's the issue:
When I first boot, before I can't even get to the installation screen, all of the installation kexts load and then it will immediately reboot - prior to the kernel being loaded. I have Lion working perfectly on this PC as well, so it's a bit odd. All of the bios settings are set up correctly so I don't think it's that (could be wrong). My motherboard is
Asus P6X58D Premium and the rest of my specs are in the signature.
Update: It seems it was something to do with my Bios configuration. I set it to stock settings, had my processor overclocked to 4ghz, and it booted. Would be extremely difficult to list all edits made to the Bios as there were so many! The only additional Kexts I added to the install media were nullcpu and fakesmc. No special flags were used either. I would like to get it running on the 4ghz setup for video editing purposes. As of right now, the processor will only work at 2.4ghz with 12GB DDR3 at 1066 vs 4.0ghz and 1600mhz - pretty substantial difference. Any known incompatibilities from Lion to Mountain Lion when it comes to overclocking?
BTW for anyone using GTX 4 series, the 480 works great on Mountain Lion. I didn't have to follow any netkas posts to get full throttle - so it seems at first glance.