Compaq Presario CQ40-419AU Windows XP Drivers

Please Install Netframework before others
Netframework.


Driver Chipset
AMD Southbridge
Southbridge driver


AUDIO:
Install MS-UAA before others:
Download (alternatif KB888111) - both are the same
Download (For Windows XP SP3)


Then install IDT High Definition Audio Codecs:
SP41500
Download (direct)
Download (HP)


Then Download and Install ATI HDMI:
Download (-credits to aren for the link)


If you sound disappear after restart follow this guide here:
Part 1

Part 2 (in case if part 1 failed)

Graphics:
ATI Mobility Radeon HD3200
(netframework installed first)
Download


Driver WIFI
Broadcom Wiireless Drivers
Download


Driver bluetooth
Download


HP wireless assistant
Download


Driver & Application Webcam
Download


Driver TouchPad
Download


Driver Quick Launch Buttons
Download


Driver Modem
Download


LAN
here or Here


Driver Card Reader
Download