ga-x58-ud5

ga-x58a-ud5 fails to boot after dsdt install

Hello all,
I was trying to setup mountain lion using unibeast and mutlibeast.
I have gone thru the setup just fine with unibeast USB and boots up ok.
Only problem is I have no audio.
Tried then using multibeast from here to install the DSDT for ga-x58a-ud5 rev 2 fb and the audio driver for the ALC889a.
Installation for that says that it was successful but when I reboot I get a halt message and no longer works.
Is there a better way to get that installed or is there something wrong with the dsdt?

Also since I am using userdsdt and the patched dsdt from here, should I use the audio kext with or without dsdt?

ga-x58a-ud5

Ok new development.
The problem is definitely with the DSDT file.
Just went thru and erased the install drive and reinstalled it.
After first boot did a reboot and was fine.
Used multibeast to just install the fb dsdt file that matches my bios (i double checked which one I had)
Then after reboot it no longer starts up anymore.

It is the grey apple boot back ground with a screen with a power symbol saying
"You need to restart you computer. Hold down the power button for several seconds or press the restart button."

Not sure if the problem is that I have a bios that has a SLIC 2.1 in it for windows activation or not but any ideas why this may not be working or how I can fix?
Do I really need the DSDT?

PLEASE can someone reply to this thread - I have the exact same problem; everything works other than sound, then I try to install a DSDT (the fc version in my case) and am met with the same error! Please someone respond