You're welcome. I'm glad you finally got your system running. Gigabyte attempted to bring the Sandy Bridge systems into the UEFI age with marginal success. The good news is that the UEFI BIOS on the Z68X-UD3H doesn't need a DSDT like the Award BIOS. So, good info.Thanks Stork for your guide,
I tried to run MultiBeast with your DSDT, but that didn't work because i had UEFI my Z68X-UD3H-B3. I just ticked the "DSDT Free" in MultiBeast, and followed your list.
Finally that worked !!!