I have the same hardware as you're setup bar GPU I have a gtx 560 TI II.
I copied you're BIOS settings and followed you're guide to a T, but I cannot boot into my ML, I am using the same disk for a win7/ML Dual boot, I cannot even boot into ML from the Unibeast USB, windows boots fine, i am getting hung up on "PCI configuration begin" can anyone offer some advice, as to what I can do, consider my specs, THIS GUIDE from the OP and the fact I am dual booting, thank you. PS 1 more thing I didn't manage to install audio because I couldnt download the file in the original post, maybe be relevant may be not
EDIT I can now boot using "-v cpus=1 npci=0x2000 DSDT=rusbbish"
Dual screens are running, I havent installed audio yet, I have turned power saving features off, ie HD sleep etc, but it seems if I dont touch computer for 10 minutes it freezes, I am using a bluetooth keyboard/mouse and do not have a usb/ps2 combo available for testing if its a system lock or if the bluetooth usb keyboard is failing, anyone? is it now safe to install HD audio using multi beast, as the beggining of this guide says not to, but multi beast has changed since then?
EDIT added the flags to boot loader etc, everything seems to be running good, even though my sound settings show output, I can even see the volume bar on the inputs section move when i blow into the mic, however I still cant get no sound out of the computer, quicktime wont even play a file? Anyone? Cheers