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Chipset
Mobile Intel 45 Express Chipset Family Graphics Driver

Fingerprint
HP Pavilion dv4-1280us Validity Fingerprint Sensor Driver

Audio
HP Pavilion dv4-1280us IDT High-Definition Sound Audio CODEC Driver

Utilities
HP Pavilion dv4-1280us Intel Chipset Installation Utility

VGA
NVIDIA GeForce 9200M GS Graphics Video VGA Driver

TV tuner
HP Integrated Hybrid TV Tuner Driver

HP Integrated Digital TV Tuner Driver

HP Pavilion dv4-1280us ENE CIR Receiver Driver

Audio modem
High-Definition Audio (HDA) Modem Installer and Driver

Wireless(varies)
Intel PRO/Wireless WLAN Drivers for Microsoft Windows Vista

Broadcom Wireless LAN Driver for Microsoft Windows Vista

Realtek RTL8102E/8111C Family PCI-E Gigabit Ethernet NIC Driver

Software Support for HP Integrated Module with Bluetooth Wireless Technology

HP Pavilion dv4-1280us JMB38X MS SD SD/MMC xD Card Reader Driver

HP Quick Launch Buttons for Windows XP

First Install  Netframework: (require for Quick Launch Installation).
Net framework 2.0
Download

Netframework 3.5 (optional)
Download

Chipset
Intel Chipset Installation Utility for ICH9 For 2K/XP
VERSION:  8.7.0.1007 REV:  A, 1.7MB
Download

Graphic
Nvidia GeForce 92000M GS/9600M GT
Download(version 178.28)
Download(version 185.85)

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Install before audio
Microsoft Universal Audio Architecture Bus UAA
Version 888111, 35MB
Download

Audio
IDT High Definition Audio Codec
Version 6.10.6087.0 C, 24.76MB
Download

If installing the audio resulting in error, ignore it and proceed with the following step.

1. Open device manager by click start, select RUN, type DEVMGMT.MSC and press Enter.
2. Under "Sound, video and game controller" you will see Audio marked with yellow.
3. Right click and select update driver, No to connect, select "Advance".
4. Select "dont Search I will choose...", select "have disk" and click "Browse".
5. Point to c:swsetupSP41698WDMWinXP and select STHDA64.inf.
6. Click open and proceed with on-screen instruction until installation finish.

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Ethernet
Realtek PCI-E Fast Ethernet NIC Driver
Version 6.208.729.2008 B, 5.02MB
Download

Wireless -Broadcom
Broadcom Wireless LAN driver
Version Version: 5.00 A , 3.5MB
Download

Wireless -Intel
Intel Pro Wireless Driver
Version: 7.00 A 6.73MB
Download

Bluetooth
HP Integrated Bluetooth Module with Wireless technology
Version: 5.1 B, 70MB
Download

Modem:
High Definition Modem Driver
Version 1.00 A,  13 MB
Download

Touchpad
Synaptics PS/2 Port TouchPad Driver 
Version:11.1.18.0 B, 24.81M
Download

Card Reader
JMicron Card Reader Driver
Version:1.0.18.7 B, 3.55M
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Input:
HP Quick Launch Buttons
Version:6.50.4.2, 23.37M
Download

Infrared:
ENE CIR Receiver Drivers
Version 2.6.6.0A 2MB
Download