Compaq Presario CQ40-133ax Windows XP Driver

Install Netframework first:
Download Here

AMD CHIPSET:

GRAPHIC:
recomended: HD3450 dedicated (base on your specs, reported that this notebook use hd3450)

ATI Radeon HD3450 Graphics/Video controller
http://game.amd.com/us-en/drivers_catalyst.aspx?driver=VideoCard/xp32-suite

ATI Radeon HD 3200 Graphics/Video Driver
http://game.amd.com/us-en/drivers_catalyst.aspx?p=xp/integrated-xp
MS UAA (required with a reboot before Audio driver)
here:
ftp://ftp.hp.com/pub/softpaq/sp33501-34000/sp33867.exe

IDT High-Definition Audio CODEC Driver
ftp://ftp.hp.com/pub/softpaq/sp39501-40000/sp39671.exe
Download (miror)
Download (mediafire)

or try this new driver
ftp://ftp.hp.com/pub/softpaq/sp40001-40500/sp40220.exe

High-Definition Audio (HDA) Modem Installer and Driver
Downnload (mediafire)
Download (CNET)
ftp://ftp.hp.com/pub/softpaq/sp39501-40000/sp39545.exe

Windows Installer 3.1(required before wireless)
here:KB893803

If you have Intel PRO/Wireless Drivers
here:
ftp://ftp.hp.com/pub/softpaq/sp38501-39000/sp38890.exe

if you have Broadcom Wireless
here:
Download (CNET)
Download (HP site)
ftp://ftp.hp.com/pub/softpaq/sp39501-40000/sp39243.exe

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

JMB38X Card Reader Host Controller Driver
ftp://ftp.hp.com/pub/softpaq/sp40001-40500/sp40221.exe

ENE CIR Receiver (vista version)
ftp://ftp.hp.com/pub/softpaq/sp41501-42000/sp41645.exe

for HDMI Audio
http://www.mediafire.com/?2mjizzz3fd1

ALPS Touchpad Driver
ftp://ftp.hp.com/pub/softpaq/sp31001-31500/sp31075.exe

or try this new driver (not sure it will work)
ftp://ftp.hp.com/pub/softpaq/sp38501-39000/sp38629.exe

HP Quick Launch Buttons
ftp://ftp.hp.com/pub/softpaq/sp40001-40500/sp40139.exe

If you have Bluetooth,
The HP Integrated Module is your Bluetooth Wireless
here:
ftp://ftp.hp.com/pub/softpaq/sp38501-39000/sp38983.exe

If you had for 7 unknown devices (buttons drivers)here:
http://www.mediafire.com/?nnnzjmojcjy

Installation --> right click machine.inf, choose install.