i cannot install windows 7 because when i go to pick my hard drive to partition it does not show up and i have tried using a different hard drive it still does not work does anybody know what the problem is? the hard drives are not even found but it shows in the bios that they are there so i dont know whats wrong?
More about :windows installation problem hard drive discovery
AHCI is the preferred bios setting, a Must for SSDDs if you want rim enabled.
However if bios is set to Ide or AHCI, windows 7 should still see the drive and will install. The difference is that windows will use "pcide" for default driver. With ahci, windows will use msahci as the driver (preferred). Also if the drive supports NCQ then it should also be enabled in bios.
Since you "tested this drive in another Computer", did you partition it, format it and write to it. It may be possible windows is not recognizing the partition that is on the HDD.
Im sure, but to double check, you did try different sata data cables.