HP ProBook 4420s Windows XP,Vista, 7 Drivers

All drivers listed here base on what HP released on their support site. I've remake the list by removing unimportant utility and list out the latest drivers you need to install. On HP website the drivers only available for Windows 7 32-bit and Windows 7 64-bit. I've check the drivers and found out that some of the drivers support Windows XP and Windows Vista.

Chipset:
Intel Chipset Installation Utility
Windows XP, Vista, 7 (32/64-bit) : Download 

Storage
Choose one, Intel Rapid Storage Manager or Intel Matrix Storage Manager. IRSM normally recommended for Windows 7 and IMSM for Vista or XP. IRSM actually an improved version of IMSM where the boot time is noticeable in Windows 7. However you can still choose IMSM in Windows 7 if you want to.
Intel Rapid Storage Manager : Download
Intel Matrix Storage Manager: Download

MEI
Intel Management Interface Driver
Windows XP, Vista, 7 (32/64-bit) : Download

Audio:
IDT High Definition Audio Drivers
Windows XP, Vista, 7 (32/64-bit) : Download

Graphic
ATI Graphics Drivers (HD4350) and Control Panel
Windows XP : Download
Windows Vista, Windows 7 (32/64-bit) : Download

Graphic
Intel HD Graphic 4000 Driver With Turbo Boost
Windows XP: Go to Intel website and select graphic - Intel 3rd Generation with Intel HD Graphic 4000 (or click here)
Windows Vista, Windows 7 (32-bit) : Download
Windows Vista, Windows 7 (64-bit) : Download 

Webcam/Camera
HP Universal Webcam Driver
Windows XP, Vista, 7 (32/64-bit) : Download

Touchpad
Synaptic Touchpad Driver
Windows XP, Vista, 7 (32/64-bit) : Download

Hotkey
HP QuickLaunch Button
Windows XP, Vista, 7 (32/64-bit) : Download

Fingerprint
Validity Fingerprint Sensor Driver
Windows XP, Vista, 7 (32/64-bit) : Download

Security
HP 3D DriveGuard
Windows XP, Vista, 7 (32/64-bit) : Download

Modem
LSI High-Definition Audio (HDA) Modem Driver for Microsoft Windows
Windows XP, Vista, 7 (32/64-bit) : Download

LAN/Ethernet
Realtek Local Area Connection Driver
Windows XP, Vista, 7 (32/64-bit) : Download 

Bluetooth
Broadcom 2070 Bluetooth Driver Software
Windows XP : Download
Windows Vista: Download
Windows 7 (32/64-bit) - Original Driver : Download

Card Reader
Realtek Card Reader Driver
Windows XP, Vista, 7 (32/64-bit) : Download

Wireless:
Choose one base on your specification:

Realtek RTL8191SE 802.11b/g/n Wireless LAN Driver
Windows XP, Vista, 7 (32/64-bit) : Download

Atheros 2011 Wireless LAN Driver
Windows XP, Vista, 7 (32/64-bit) : Download

Intel Wireless LAN Driver
Windows XP, Vista, 7 (32/64-bit) : Download 

Ralink Wireless LAN Driver
Windows XP, Vista, 7 (32/64-bit) : Download 

Broadcom Wireless LAN Driver
Windows XP : Download
Windows Vista: Download
Windows 7 : Download

Bluetooth Application
Install this useful application for your bluetooth since it is free for applicable product like yours.
HP Integrated Bluetooth Module with Wireless Technology
Windows 7 (32/64-bit) - Original Driver : Download

Notes:
ATI Graphics Drivers (Vista,7) Supports the following graphic products:
ATI Mobility Radeon HD 530v ATI Mobility Radeon HD 530v ATI Mobility Radeon HD 530v ATI Mobility Radeon HD 5470 ATI Mobility Radeon HD 5470 ATI Mobility Radeon HD 5470 ATI Mobility Radeon HD 6370 ATI Mobility Radeon HD 6370