CHIPSET DRIVERS:
INF Update Utility - Primarily for Intel® 5, 4, 3, 900 Series Chipsets
Compaq Presario CQ40-520TX Chipset Driver
Download (direct link) (32b-bit and 64-bit)
Optional:
Intel matrix storage manager:
(32-bit and 64-bit)
Download (intel site)
Download (mediafire)
Sata Driver/Optional install.
ICH9 sata driver,
Download (microsoft)
Download (mediafire)
AUDIO:
Compaq Presario CQ40-520TX Audio Driver
IDT - High Definition Audio Codecs
(32-bit and 64-bit)
Download (sp45211)
If it didn't work use below:
Download (SP41616)
Download (SP41500)
VGA/GRAPHIC
if you have intel graphic:
Mobile Intel 4 Series Express Chipset Family Graphics Driver (32-bit)
Download
Download (64-bit)
If you have Nvidia graphic
Nvidia GeForce G 105M/103M
Download (32-bit and 64-bit)
BUTTON
Compaq Presario CQ40-520TX Button Driver
HP Quicklaunch Button
Download (32-bit)
Download (64-bit)
Pointing Device Driver:
ALPS Pointing Device Driver (2- and 4-Way) for 14-Inch Wide LCD
(32-bit and 64-bit)
Download
MODEM:
Compaq Presario CQ40-520TX Modem Driver
LSI High-Definition Audio (HDA) Modem Installer and Driver for Microsoft Windows Vista
(32-bit and 64-bit)
Download
WIRELESS:
==================================
Compaq Presario CQ40-520TX Wireless Driver
There are 3 available drivers for wireless, choose base on your specs, or test which work, no risk for trying.
If you have Intel Wireless:
Intel Wireless LAN Driver for Microsoft Windows Vista
Download
If you have Broadcom Wireless:
Broadcom Wireless LAN Driver for Microsoft Windows Vista
Download
If you have Atheros Wireless
Atheros Wireless LAN Driver for Microsoft Windows Vista
Download
====================
HP Wireless Assitant:
(32-bit and 64-bit)
Download
ETHERNET/LAN:
Realtek RTL8102E/8111C Family PCI-E Gigabit Ethernet NIC Driver
(32bit and 64-bit)
Download
CARD READER:
JMB38X MS SD SD/MMC xD Card Reader Driver
(32-bit and 64-bit)
Download
CAMERA/WEBCAM:
Cyberlink YouCam Software
(32-bit and 64-bit)
Download
Lightscribe System Software
(32-bit and 64-bit)
Download
Validity sensor
Download
TV Tuner driver
Download