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Hot swap problems

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Hot Swap Problems
I have Windows 7 Installed and recently bought some hot swap bays for my computer. I installed the bays and ran the necessary cords to them but It will not recognize the drive unless i restart the computer.

From what I read it has something to do with AHCI in the Bios.. I am Running Windows 7 on this machine and have tried to enable it in the bios, and also manually change the registry key to no avail..

When I enable AHCI in my Bios on my GIGABYTE GA-MA790GPT-UD3H mother board it gets to Verifying DMI data and hangs at this point and will not do anything else. I have to restart this and disable AHCI in order to boot to windows again.

If anyone has any suggestions it would be most appreciated. From what I read some people tend to think that you have to do a fresh install in order for this to be accomplished but I do not want to do that if it is not needed.

The Registry Key that I read that needed to be changed is \HKEY_LOCAL_MACHINE\SYSTEM\CurrentcontrolSet\services\msahci \ then modify the start key from "3" to "0".

Again if anyone could shed some light on this I would appreciate it.

I also have tried the Microsoft fix it tool for this it has same result it hangs at verifying dmi data pool.
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