Compaq 325 Driver for windows 7

AUDIO:
IDT High-Definition (HD) Audio Driver
Download

GRAPHIC:
ATI Video Driver and Control Panel
Download

WEBCAM:
Driver for webcam: Download
Software For webcam: Download

MODEM:
LSI High-Definition Audio (HDA) Modem Driver for Microsoft Windows
Download

BUTTON/KEYBOARD:
HP Hotkey Support: Download
Synaptic Touchpad : Download

WIFI:
There are 4 types of wireless available, choose only one base on your specification. If you dont know whic to choose, try which work, it will not harm your system.
Note that normally after you get windows 7 working in your notebook the wifi should work just fine, normally no need to install the wireless/wifi unless there are no wifi driver installed.

Realtek RTL8191SE 802.11b/g/n Wireless LAN Driver for Microsoft Windows
Download

Ralink 2011 802.11 b/g/n WiFi Adapter
Download

Broadcom Wireless LAN Driver for Microsoft Windows 7
Download

Atheros Wireless LAN Driver for Microsoft Windows 7
Download

HP WIRELESS SOFTWARE:
HP Wireless Assistant
Download

LAN/ETHERNET:
Realtek Ethernet Controller Drivers
Download

BLUETOOTH:
there are 2 bluetooth driver, choose base on specs or try which work for you:

Broadcom 2070 Bluetooth Software and Driver
Download

Ralink/Motorola Bluetooth Adapter Driver
Download

BLUETOOTH SOFTWARE:
Software Support for HP Integrated Module with Bluetooth Wireless Technology for Microsoft Windows 7
Download

OTHERS:
HP USB 2.0 Docking Station Drivers
Download