Compaq Persario CQ40-321AX Windows XP Driver

Download and Install ALL drivers, Then report back if you have problems, notice that for AUDIO and GRAPHIC you need to work on it with instruction i give below.

please Download .Netframework before others:
Net framework 2.0
Download

AMD CHIPSET
(netframework installed first)
Compaq Persario CQ40-321AX CHIPSET Driver
South Bridge Driver:
Download (AMD SITE)
Download (mediafire)

AUDIO:
=======================================
Compaq Persario CQ40-321AX AUDIO XP Driver

1, First Download
MS-UAA: Download(sp33867)

for windows XP SP3:
If ms-uaa above failed, use this patch: KB835221.exe

restart after install MS-UAA and install

IDT High Definition Audio
Download (sp39671)
0r
Download (SP41500)

Installing this audio driver may resulting in error, install anyway and continue with this step:

1. Manually install audio Driver

2. after that install

ATI HD Audio Device: Download

GRAPHIC:
=======================================================
(for advance user you may know the issue of dowgrade newer model to xp, below several options to install the ATI RADRON graphic card, so if you found the way to install it plz leave your comments)

1.. First Download ATI RADEON Driver here and choose FULL PACKAGE SUITE. Install
http://support.amd.com/us/gpudownload/windows/Pages/integrated_mce-xp.aspx?type=2.7&product=2.7.4.3.3.3.1&lang=English

2. Then Download Mobility driver below and Install
ATI Mobility Radeon HD 3450 and ATI Radeon HD 3200 Graphics/Video Drivers :
ftp://ftp.hp.com/pub/softpaq/sp28001-28500/sp28077.exe

If still didn't work follow guide Below:

ATI Radeon HD 3200 Graphics/Video Driver
(netframework installed first)
Download
If you have problems installing the Graphic drivers read instruction here:
Installation Guide ATI RADEON HD3200
==============================================

ETHERNET:
Compaq Persario CQ40-321AX LAN/ETHERNET XP Driver
Realtek RTL8102E/8111C Family PCI-E Gigabit Ethernet NIC Driver
Download
or
Realtek RTL8168C(P)/8111C(P) PCI-E Gigabit Ethernet NIC
Download

WIRELESS:
Compaq Persario CQ40-321AX Wireless XP Driver
==============================================
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

Intel(R) PRO/Wireless 3945ABG Network Connection
Download
(requires windows installer 3.0 installed first)

Atheros: Download (direct)
or here (atheros site)
=============================

MODEM:
Compaq Persario CQ40-321AX Modem XP Driver
High Definition Audio Modem
Download

CARD READER
Compaq Persario CQ40-321AX Card Reader XP Driver
JMB38X Card Reader Host Controller
Download

TOUCHPAD
Compaq Persario CQ40-321AX Touchpad XP Driver
Download

WEBCAM:
Compaq Persario CQ40-321AX Webcam XP Driver
Cyberlink youcam software 2.0
Download

INFRARED:
Compaq Persario CQ40-321AX CIR XP Driver
ENE-CIR Reciever:
Download

If you have 7 unknown device:
Unknown devices:
Download

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