i still use my old but (usually) reliable original lifehackers build, featuring a Gigabyte EP45-UD3P (rev 1.0), 8GB RAM. Originally equipped with a nVidia 9500 GT then later dual gfx with 9500gt/gtx285 and now 9500gt/GTX680 - if it would work. Right now i am just trying to get this thing rolling, so far without luck. I installed ML using Kakewalk and using the method by another big hackintosh site which doesnt seem to be friends with this. Funny enough, with both methods the installation works fine, but then the system hangs on bootup.
Without changing anything, it stalls at PCI CONFIGURATION BEGIN.
This can be fixed by either using npci=0x2000 or npci=0x3000 both seem to work.
Then the boot process advances to the point where the graphics drivers are loaded. I tried booting the system only with one gfx card (both the 9500gt and the gtx680) no success. In both combinations i tried graphicsenabler=yes / no. I tried deleting the NV* kexts, since that was suggested somewhere, no change. Obviously i also tried booting safe mode (-x) - doesnt start.
I can only boot up using single user mode, thats the furthest i get. I am kind of baffled why i am having so much problems, since there are a lot of success stories of people with the same board and ML, so i think the graphics card must be the culprit.... There is also an error with "Sound assertion in ApplaHDADriver..." but i removed the AppleHDA kexts and it was the same.
I would really appreciate any suggestions what else i can try, since i ran out of ideas ... i cannot try installing mavericks because i have a software that runs only on mountain lion or below...