I had an issue like this with an MSI board after to use powered down incorrectly. My issue was more with the pci-e bus. I had to reseat the CPU and let it sit for awhile without power plugged in. After putting everything back it powered fine with no issues.
But its odd that you you are having issues with your raid. Might just try breaking everything down and start with the basics.
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"But seriously anybody know anything about launch coooodes"
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