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#21
Your CPU is nearly 7 years old. Intel Core 2 Quad Q6600 HH80562PH0568M (BX80562Q6600)
This is a bit before Vista was released. Timeline of Microsoft Windows - Wikipedia, the free encyclopedia which did support AHCI.
I'm not positive but the SSD should, I say should, work in SATA mode once you set the BIOS correctly.