Compaq Presario CQ40-503AU Windows XP Drivers

Net framework 2.0
Download

AMD CHIPSET:
Download

AUDIO
MS UAA (required with a reboot before Audio IDT)
Download


or try this MS-UAA:
MS UAA (alternative to sp33867), here
MS UAA for XP SP3, here


Then install ATI HDMI Audio
Download

restart

IDT High-Definition Audio CODEC Driver
Download

or try this driver reported work in xp
sp41693, here
sp39671, here

if the audio disappear after restart follow guide here:
part 1,

if still the same follow part 2 guide
part 2


ATI dedicated HD 3250, 3450, 3750 etc
Download

If the drivers above didn't use mobility modder and read the instruction here:
Download the driver here:
http://www.driverheavendownloads.net/ati.htm

(choose latest version and follow guide below)
http://www.driverheaven.net/modtool.php


WIRELESS:
Broadcom:
Download

ETHERNET:
Realtek RTL8102E Family PCI-E Fast Ethernet NIC
Download

CARD READER
JMB38X Card Reader Host Controller
Download

ENE-CIR Reciever:
Download