Integrated SATA controller causes Windows 2000 startup hang/ freeze

[jpcw]

I have an AOpen AK79D-400Max MB with Athlon XP 2800+, 1024Gb memory, and the mb has an integrated SATA controller (Promise 150 SATA chip) which is enabled through the BIOS. The PC has Windows 2000 and Linux installed as dual boot, and I use Grub as the boot loader. My problem is this:
When I enable the SATA in the BIOS (with or without a drive connected to it), Windows 2000 gets as far as the second (white) startup screen, but then it hangs with the status bar at about 75% (forcing a manual hard reset). I can boot into safe mode with it enabled OK, and it boots normally with the SATA disabled. I've set the boot.ini with the /sos switch, but this only shows the drivers loading during the first startup screen (the DOS-like bit). The bootlog does not record anything as it does not get as far as the GUI. So I'm stuck as far as figuring out what might be causing the conflict. I wish there was a way of forcing Windows to display what's going on during the second startup screen, but the only thing I can bring up is the build version. I haven't tried booting into Linux with it enabled yet, but my main concern is Windows as this is my primary OS. Any suggestions please??