Seems like my issue might be related to http://communities.intel.com/thread/28589 which has to do with enabling the AHCI drivers in the BIOS. I am pretty sure that my HP system meets all other requirements and that I tried to install the correct Vista x64 drivers. I did follow the checklist and found that the AHCI driver is included in my Device drivers (Windows Control panel) but wonder if that indicates 100% whether I am in AHCI mode. I'm guessing that that might still be the issue.
So three questions.
1) If I find the ACHI (or RAID) mode in my BIOS, will it have any destructive results if I turn it on? For example will I lose access to my system disk or need to reformat it? Or is AHCI/RAID mode backwards compatible with non AHCI/RAID mode?
2) Is the April 1st update to Hormel's thread the latest one, or did I miss the fianl solution to his problem?
3) Is there a log file for the insatller that can tell me definitively what is failing?
ICH8 support has been dropped for driver/package revisions greater than 10.1.0.1008: http://communities.intel.com/thread/23265
Try 10.1.0.1008: http://downloadcenter.intel.com/Detail_Desc.aspx?DwnldID=20104