Compaq Presario CQ40-621LA Windows XP Drivers

First Install:
Net framework 2.0
Download


AMD
(netframework installed first)
South Bridge:
Download



AUDIO

First install
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
and try install this ati HDMI Audio
Download
restart


IDT High-Definition Audio CODEC Driver
Download (SP41500.exe)



GRAPHIC:
ATI HD3200
(netframework installed first)
Download


Base on the specs this model use HD3200 Graphic. On the HP site drivers for windows 7 shows mobility radeon for other series also so if the drivers above didn't work use this one.


ATI dedicated HD 3250, 3450, 3750 etc
Download

WIRELESS:
Broadcom:
Download


If you ahve bluetooth:
HP Integrated Module with Bluetooth Wireless Technology
Download


HP Wireless Assitant:
Download


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


CARD READER
JMB38X Card Reader Host Controller
Download


ENE-CIR Reciever:
Download


HP Quick Launch Buttons
Download


TOUCHPAD
Download