WD Caviar Green: POST hangs detecting AHCI drive, can't boot up

WD Internal Drives Desktop & Mobile Drives
1

I have a brand new WD Caviar Green 2TB drive with Windows 7 64-bit that’s working fine in IDE mode. I want to switch to AHCI mode since it’s faster and has more features like hot plugging. (Windows 7 supports switching from IDE to AHCI mode as explained here http://support.microsoft.com/kb/922976)

Unfortunately, if I set AHCI in the BIOS, then the computer hangs trying to detect AHCI port 0 with this drive. It hangs for 10+ minutes and won’t even get past the booting-up stage. I’ve never had this problem with any other drive. I have drives several years old that work fine with AHCI.

Is there something wrong with my Green drive? Does it just not support AHCI?

2

The green drives don’t seem to support much of anything. Not to be negative, but I’ve seen a few threads here from green owners asking why the drives can’t do this or that. They seem to be the lowest end HD WD offers.

( I don’t actually know, just going from other threads. )