1. Normally the drivers need to be install is: Graphic (SMSBUS), Card Reader, Infrared, Quiclaunch, Modem and Toucpad.
make sure to check windows updates, there are 2 sections which is critical updateand optional updates, select optional updates and there you will see several updates for your driver especially graphics.
CHIPSET DRIVERS:
INF Update Utility - Primarily for Intel® 5, 4, 3, 900 Series Chipsets
Download (Intel website)
Intel Chipset Installation Utility:
Download
GRAPHIC
Compaq Presario CQ40-525LA Graphic Driver
ATI Mobility Radeon HD 3200/3450/4200/4330 Graphics
Download
AUDIO:
Compaq Presario CQ40-525LA Audio Driver
IDT High-Definition Audio CODEC Driver
Download
Compaq Presario CQ40-525LA Button Driver
HP Quicklaunch Button
Download (direct)
Download (HP)
Compaq Presario CQ40-525LA Touchpad Driver
ALPS Touchpad Driver
Download
HP Wireless Assistant
Download (direct)
Download (HP)
Compaq Presario CQ40-525LA LAN/Ethernet Driver
Realtek PCI-E Gigabit Ethernet NIC Driver
Download
WIRELESS:
Compaq Presario CQ40-525LA Wireless Driver
Broadcom Wireless LAN Driver for Microsoft Windows 7
Download
CARD READER:
Compaq Presario CQ40-525LA CArd Reader Driver
JMB38X MS SD SD/MMC xD Card Reader Driver
Download
Validity Sensor Driver For Windows 7
Download
WEBCAM:
Compaq Presario CQ40-525LA Webcam Driver.
Cyberlink YouCam Software
Download
Lightscribe System Software
Download
INFRARED:
Compaq Presario CQ40-525LA Infrared Driver
ENE CIR Receiver Driver
Download
HP USB Recovery flash Disk
Download
HP Recovery manager for Windows 7
Download
HP Mediasmart DVD software
Download