I can’t install windows 8 on bootable raid

Hello there,
I need to install Windows on my RAID but it always failed with an error stated below:
'We couldn't create a new partition or locate an existing one. For more information, see the Setup log files.'
Then I tried to perform the DISK PART command. It still failed. I even removed the RAID on my computer and install Windows XP, 7 and 8. All these just throws an error. I used Western Digital Hard Drive Tool to remove all the data on my partitions. Then I removed my 1GB RAM and left my 4GB RAM on it. It still failed. I really don't know what's missing. By the way, my computer has ASUS P6T SE Motherboard with i7 920 processor. 4 128GB OCS SSD, 16GB of Server Grade DDR RAM Clock at 1333 and 2 ATI 7950 cards and 1000 watts Power Supply Unit.
