Windows Bluescreen after enabling AHCI in System Bios not resolved by making registry change

[dvdgremlin]

Hi,

Looking at fitting an SSD which needs AHCI.  So I looked on microsoft and saw registry edit which I've done. Then I  changed to AHCI in BIOS and get BSOD so set it back and need some advice please :

Also I see that there are problems with Smsung Pro, does anyone have problems with Samsung evo ?  Does anyone know why mSATA is not recommended for boot disk and only for cache ?

thanks

[dvdgremlin · Accepted solution]

I found out the solution to this.

Simply making the registry change and booting having changed BIOS to AHCI does not cause Windows to install the correct driver..  It simply crashes with BSOD in Windows 7.

The steps are to download the correct driver for AHCI and extract into a folder. 

Make advised  registry edit for AHCI.

Go into hardware manager and install that driver on to SATA controller. (You should override the Windows warning that it may cause problems).

Now reboot and make BIOS change for AHCI.  It will now boot and the driver will be fully installed by windows correctly.