Compaq Presario CQ40-336TU Windows XP Drivers

Intel matrix storage manager:
Download (intel site)
Download (mediafire)

CHIPSET:
filename: infinst_autol.exe
INF Update Utility - Primarily for Intel® 5, 4, 3, 900 Series Chipsets
Download (direct link)
Download (intel website)
Download(mediafire)

restart after chipset installation

AUDIO
MS UAA (required with a reboot before Audio an video (HDMI) drivers)
here:
SP33867
Download

High-Definition Audio (HDA) Modem Installer and Driver (confirm MS-UAA before installing)
here:
Download

IDT High-Definition Audio CODEC Driver
SP39671
Download (ftp)
Download (hp)
Download (mediafire)
Download (ziddu)

After Download Install the IDT drivers, if it failed to install follow this guide:
Manually install audio driver

GRAPHIC:
Mobile Intel 45 Express Chipset Family Graphics Driver
Intel graphic accelerator 4500MHD
Download

.Net Framework(required before Q.L.)
here

HP Quick Launch Buttons
here

WIRELESS:
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
or
Intel: Download
(requires windows installer 3.0 installed first)

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

HP Wireless Assitant:
Download

Cyberlink youcam software 2.0
Download