I knon WinXP and AHCI don't jibe very well. When I have the AHCI enabled in the BIOS the WinXP boot crashes with a blue screen of death and the machine loops back into reboot. All guides to solve the problem concntrate on how to get the ICH9 drivers installed on WinXP. However I seem to have done that already: http://img135.imageshack.us/my.php?image=devmanagerok5.jpg
I remember I installed all kinds of drivers from the CD that came with my mobo right after I assembled my machine.
Still the WinXP seems to act as if the drivers were not there.
Another thing: during boot the BIOS goes into some SATA drive recognition routine which ends with a messge stating something like: "No driver was found".
So what can I do to get the darn WinXP to boot with AHCI enabled?