HP dv5z hard drive controller driverWindows XP 32 bit

The device id is PCI\VEN_1002&DEV_4391.

sp39622.exe, (1/1 , 87.61M)
or download from original pages:
http://h10025.www1.hp.com/ewfrf/wc/softwareDownloadIndex?softwareitem=ob-63813-1&lc=en&dlc=en&cc=us&lang=en&os=2093&product=3812292

specs:

Compatibility:		Microsoft Windows Vista, Microsoft Windows Vista Ultimate (64-bit), Microsoft Windows Vista (64-bit), Microsoft Windows Vista Home Premium (64-bit), Microsoft Windows Vista Business (32-bit), Microsoft Windows Vista Home Basic (32-bit), Microsoft Windows Vista Home Premium (32-bit)
System requirements:		Operating Systems Microsoft Windows Vista Business 32 Edition Microsoft Windows Vista Home Basic 32 Edition Microsoft Windows Vista Home Premium 32 Edition Microsoft Windows Vista Home Premium 64 Edition Microsoft Windows Vista Ultimate 64 Edition
Description:		This package contains an Advanced Host Configuration Interface (AHCI) compatible driver for the AMD RAID Controller in the supported notebook models and operating systems.

DX5150 notebook - sata driver

There no sata driver needed if you want to downgrade to xp. Just follow the instruction below.

1. start your laptop and press F10 to enter BIOS Setup.
2. select Integrated Periphals,
3. chosed South OnChip PCI Device,
4. scrolled down to Onboard Chip SATA and choosed IDE Controller instead of RAID Controller.
5. Afterwards SATA disk will recognize by the Windows XP Pro setup

good luck.

HP Pavilion dv2550se ICH9M-EM SATA AHCI Controller Driver

if the blue scree on death appears on your HP Pavilion dv2550se while installing windows xp, you need ICH9M-EM SATA AHCI Controller Driver.
incorporate the driver into your Windows XP installation CD by using software such as nLite.

ICH9M-EM SATA AHCI Controller Driver
(Download)