Change IDE To AHCI Mode For Windows 7, 8, or 10

For Windows 10

Found this at the following post.

Basically follow these steps:

1. Right-click the Windows Start Menu. Choose Command Prompt (Admin).
2. Type this command and press ENTER: bcdedit /set {current} safeboot minimal
3. Restart the computer and enter BIOS Setup (the key to press varies between systems).
4. Change the SATA Operation mode to AHCI from either IDE or RAID (again, the language varies).
5. Save changes and exit Setup and Windows will automatically boot to Safe Mode.
6. Right-click the Windows Start Menu once more. Choose Command Prompt (Admin).
7. Type this command and press ENTER: bcdedit /deletevalue {current} safeboot
8. Reboot once more and Windows will automatically start with AHCI drivers enabled.

For Windows 7

Open regedit and go to the following location:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\msahci

or Windows 8 and 8.1

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\storahci

And change the Start DWORD value from 3 to 0.

Got this from this location