Compaq Presario CQ40-621AU Windows XP Driver

Remember to install according to order, please install AUDIO FIRST before graphic drivers.

please Download .Netframework before others:
Net framework 2.0
Download


AMD CHIPSET
(netframework installed first)
South Bridge Driver:
Download (AMD SITE)
Download (mediafire)

AUDIO:
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

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

Download and install the driver, you will get the error while installing.
Perform the below steps to fix the issue.
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\sp39671 or sp41500 folder and select the .inf  file and click open and Continue with the onscreen instructions.

if you still have problems to follow the above the instructions above, read the instruction by clicking the link below.
1. Manually install audio Driver

2. after that install

ATI HD Audio Device: Download


2. In case after install the audio and it disappear after restart follow guide here:

Audio disappear after restart part 1
Audio disappear after restart part 2

GRAPHIC:
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:
Realtek RTL8102E/8111C Family PCI-E Gigabit Ethernet NIC Driver
Download
or
Realtek RTL8168C(P)/8111C(P) PCI-E Gigabit Ethernet NIC
Download

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)

MODEM:
High Definition Audio Modem
Download

CARD READER
JMB38X Card Reader Host Controller
Download

TOUCHPAD
Download

Cyberlink youcam software 2.0
Download

ENE-CIR Reciever:
Download