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HP PAVILION DV4-1551DX Windows XP Driver

INTEL CHIPSET:
INF Update Utility - Primarily for Intel® 5, 4, 3, 900 Series Chipsets
Download  (intel website)
Download(mediafire)

AUDIO
1.Install MS-UAA First:
Download

2. Install IDT: sp41398.exe
Download

If direct install sp41398.exe didnt work, install it manually via device manager:
1. Click on Start and select Run. Now type devmgmt.msc and press enter.
2. Right click on "Audio device on High Definition Audio Bus" and click  Update driver.
3. Select "Install from a list or specific location".
4. Click Next. Then select "Don't search, I will choose the driver to  install".
5. Click Next and then select "Sound, video and game controller" from  the list.
6. Click Next and then click Have Disk.
7. Click Browse C:\swsetup\sp41398 folder and select the .inf   file and click open and Continue with the onscreen instructions.

GRAPHIC
if you have intel graphic:
Mobile Intel 45 Express Chipset Family Graphics Driver
Intel graphic accelerator 4500MHD
Download

If you have Nvidia graphic:
NVIDIA GeForce G 103M/ G 105M Graphics Driver (186.81 WHQL XP 32-bit)
Download

FOR NVDIA: if resulting in error use modded driver below:
Download
3-step process to install:
1. Download driver, double click and select extract,
2. Download modded INF and replace original INF in extracted folder,
3. Install and  reboot. 

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

WIRELESS:
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Choose one of the wireless driver base on your specs, if you dont know,  just try each driver (there are no risk and will not harm your system)
---------------------------------------------------------
Broadcom: Download

if error try newer version -
Broadcom BCM9431HMG
Broadcom: Download

Intel: Download
(requires  windows installer 3.0 installed first)
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HP Integrated Module with Bluetooth Wireless Technology
Download

HP Wireless Assitant:
Download

Realtek RTL8102E Family PCI-E Fast Ethernet NIC
  Download(direct)  or Download

CARD READER
JMB38X Card Reader Host Controller
Download

ALPS Touchpad
Download

Synaptics Touchpad
Download
Download 

WEBCAM
Cyberlink youcam software 2.0
Download

LIGHTSCRIBE:
Lightscribe system software
Download

If you have 7 unknown device:
Unknown devices:
Download

Unzip files, open folder and right click at machine.inf, select install.