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Chipset Driver
HP Pavilion zv5000 comes with 2 variant which is with Intel processor and AMD processor. Model with Intel processor use Intel 4 Series chipset while model with AMD use Nvidia chipset. Hp did not provide the chipset drivers in their support page for zv5000 so you can try:

Intel Chipset
Try this driver: Download (x86/x64)
If not working use Intel auto detection tools to download the drivers from Intel website.

Nvidia Chipset
Try this driver : Download
If not working use Nvidia auto detection tools from Nvidia website.


Audio -Universal ADI 1981B Audio Driver for Nvidia/Intel Chipset
Version 1.00 A, 18.48M
Download

Audio - Model with Nvidia Chip 
ADI 1981B Audio Driver for NVIDIA Chipset
Version 5.12.1.4010 A, 19.97M 
Download

There 2 drivers available for your graphic, choose one base on your specification.

Graphic - ATI
ATI M9/M10/RC300M VGA Driver for Windows 2000/XP
Version 8.003.3 C, 39.0M
Download

Graphic - Nvidia 
NVIDIA GeForce4 440 Go (64M) and NVIDIA GeForce4 420 Go (32M)
Version7.2.3.0 B, 26.87M
Download

QuickLaunch
HP Quick Launch Buttons
Version5.10 B, 5.63M
Download 

Touchpad 
ALPS Touchpad Driver for Windows 2000/XP
Version1.00 A, 3.37M
Download 

Modem 
Agere Systems AC97 Modem Driver (for model with Intel processor)
Version2.1.51.00, 1004.16k
Download

Modem 
Systems AC97 Modem Driver (for model with AMD processor)
Version2.1.36.0, 1.66M
Download 

There are 2 applicable wireless drivers, choose one (1) base on your specification.

Wireless - Atheros 
HP WLAN W400-W500 Driver for Windows 2000/XP
Version4.00 B, 2.13M
Download 

Wireless - Broadcom 
Broadcom WLAN Network Adapters Driver for Windows XP
Version 3.00 D, 3.32M
Download 

Bluetooth 
Support Software for Bluetooth by HP
Version 3.00 B, 20.08M
Download 

LAN - Ethernet 
Realtek RTL8101L NIC Driver for Windows 2000/XP
Version 1.00 B, 2.57M
Download 

Wireless - Utility
(optional installation, this utility provide interface for wireless connection) 
WLAN Utility Installer (Atheros, Broadcom)
Version 3.00 E, 23.9M
Download 

Card Reader
TI PCI1520 and PCI1620 Driver for Windows 2000/XP
Version1.00 B 4, 4.02M
Download