Compaq Presario CQ40-423TU windows 7 Drivers

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


ICH9 DRIVER
Intel Chipset Installation Utility for ICH9m for Microsoft Windows 7
Download

CHIPSET
INF Update Utility - Primarily for Intel® 5, 4, 3, 900 Series Chipsets
Download (intel website)

GRAPHIC/VGA:
Nvidia GeForce G 105M/103M Graphics Driver
Download 

or if you have intel graphic:
 Mobile Intel 4 Series Express Chipset Family Graphics Driver
Download

ETHERNET:
Realtek RTL8102E/8111C Family PCI-E Gigabit Ethernet NIC Driver
Download

AUDIO
IDT - High Definition Audio Codecs
Download 

WIRELESS:
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RECOMENDED - Intel wireless
Intel Wireless LAN Driver for Microsoft Windows 7
Download

If you have Broadcom Wireless:
Broadcom Wireless LAN Driver for Microsoft Windows 7
Download

If you have Atheros Wireless
Atheros Wireless LAN Driver for Microsoft Windows 7
Download
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Software Support for HP Integrated Module with Bluetooth Wireless Technology
Download

HP Wireless Assistant
Download   

 JMB38X MS SD SD/MMC xD Card Reader Driver
Download

 ALPS Pointing Device Driver (2-Way) for 14-Inch Wide LCD
Download

HP Quick launch Button
Download

Cyberlink YouCam Software
Download 

HP DVD Play
Download

TV Tuner Driver
Download

Recovery Manager Installer Patch for Microsoft Windows 7 Upgrade
Download

HP Connection Manager 3.0 APN Patch
Download