|You either need to install the SATA controller drivers or configure the drive to run in an IDE compatibility mode in the BIOS. |
Evidently that model came with Vista installed so there is no WinXP SATA driver on the HP site.
The easiest thing to do is to set the drive in the BIOS to AHCI mode.
You also need to have at least SP1 installed prior to this or only 127GB of storage will show.