After clean installing Windows 7 in this model, most of the drivers installed and there are few driver you need to install:

here is the device no installed:

Mass Storage Controller
PCI bus device 6, function 2
unknown device, no diver found (on Microsoft ACPI-Compliant , value: ACPI\HPQ0006

Install Following Drivers:

Mass Storage Controller
Texas Instruments PCI (TI-PCI) 6x12/7x12 Cardbus (Media Card Reader)
Download

If there will be problems with installation use compability mode. How to do it all informations here.

unknown device, ACPI\HPQ0006
HP Quick Lunch Buttons here (ver 6.50.5.1)
Download