Compaq Presario CQ40-520TX Windows Vista Driver

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)

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:
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 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

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