How to enable SATA AHCI

tie23he

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Jul 1, 2010
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Today I clean installed windows 7 onto SSD. MoBo : ASUS p7p55d-e pro
I believe I went to bios before installing and set Storage Settings - SATA from IDE to AHCI.
Windows 7 installed without any problems.

I then install Samsung Magician and it says AHCI mode is deactivated.
Also, it says unable to detect sata interface details.

I tried following several guides such as http://support.microsoft.com/kb/922976 but to no avail.
How do I enable AHCI so I can optimize performance?
 
Solution
The switch to AHCI had to be done before the Windows installation, not after. If the Microsoft way doesn't work, it rarely does, then you have to switch to AHCI and reinstall windows onto the SSD.