Are you using the DSDT for the GA-H55-USB3? I know i did, i cant really think of anything else i did differently, i will let you know exactly which version of multibeast i used, i know it SHOULDNT matter, but i built 2 rigs with that mobo and when i went to use the newer 'Snow Leopard' version of multibeast i couldnt even get it to reboot.
Yes, I'm using the DSDT for the GA-H55-USB3. I had the same problem during my build. The DSDT/Multibeast combo I was using for my SL build did not work at all.
It was driving me crazy as you may have read in my early posts. I was completely lost. Couldn't boot. Then No video. Blue screen. Then No mouse. One problem after another.
I had to go back 2 or 3 versions to find one that worked. I finally got everything working but that was before USB3 devices came out. Once they did I realized I was not getting the superspeed. The ports work but at USB2 speed.
I've tried to flash the USB3 firmware but not being a PC guy I wasn't successful with that. It's not the end of the world when it's all said and done.
I use eSata and FW800 mostly to transfer between drives.
Now that PT11 has arrived I'm going to see if my PT10HD3 TDM system will play nice with it. If I can get them both working on this GA-H55-USB3 then I'm going to build a new system with the GA-P75-D3. I have a 4th PCIx Accel and the GA-P75-D3 has a coaxial S/PDIF output which should allow me to run Native using my UA2192 as the stereo converter. This is what I do now but with an RME card as the interface. The whole digital optical output thing is too complicated. Most devices are ADAT optical and they don't work with S/PDIF optical.
Using my existing iStarUSA D-400 rack, memory (I'll change the memory from 16Gb to 32Gb after the build is working), video card, UA2 Quad card and hard drives.
My new build would be:
GA-P75-D3
i7-3770K
AVID HD4 PT10HD / PT11HD Native
Cooler Master Hyper 212 Evo
Plextor M5M PX-256 mSata SSD
HighPoint RocketRaid 642L SATA III or Rosewill RC-230 SATA II controller
Sedna 3.5" 2xUSB3 + 2xUSB2 front panel
So I'll lose my FW connectivity but I'll hopefully gain USB3 and still have eSata.
I'll keep everyone posted as I get into this. First thing is to make sure PT10 & PT11 play nice with each other as AVID has said they would.