I'm not sure. But I saw the "7 Series/C216" part somewhere while testing different things in WinXP / Win 7 using software like Aida64, Speccy, Task Manager, etc. Here are the Hardware IDs: PCI\VEN_8086&DEV_1E03&SUBSYS_17F6103C&REV_04 PCI\VEN_8086&DEV_1E03&SUBSYS_17F6103C PCI\VEN_8086&DEV_1E03&CC_010601 PCI\VEN_8086&DEV_1E03&CC_0106 First time I tried to install WinXP in AHCI mode, I integrated only the "7 Series/C216" drivers (latest version from your first post). BSOD, no luck. The second time I tried to install WinXP in AHCI mode, I integrated the "7 Series", "7 Series/C216", etc. drivers (this older version from HP's website). And it worked fine. So maybe I have to integrate the "7 Series" drivers and not the "7 Series/C216"? Maybe that was the problem? And maybe the driver's version has nothing to do with it? Can you tell this from the Hardware IDs above? Either way I will try it with the latest drivers when I have time.