Compaq Presario CQ20-125Tu XP Driver

Drivers for CQ20-125TU 

Intel Chipset,(install and reboot before other drivers):

INF Update Utility - Primarily for Intel® 4, 3, 900 Series Chipsets
Download

url: http://downloadcenter.intel.com/Detail_Desc.aspx?agr=N&ProductID=816&DwnldID=16023&strOSs=44&OSFullName=Windows*%20XP%20Professional〈=eng

Mobile Intel 45 Express, here:
Download

MS UAA (required with a reboot before Audio driver)
here:
ftp://ftp.hp.com/pub/softpaq/sp33501-34000/sp33867.exe

ADI SoundMAX AD1984A Audio Driver
here:
ftp://ftp.hp.com/pub/softpaq/sp39501-40000/sp39695.exe

High-Definition Audio (HDA) Modem Installer and Driver
ftp://ftp.hp.com/pub/softpaq/sp39501-40000/sp39545.exe

SCR33x USB Smart Card Reader Driver 
ftp://ftp.hp.com/pub/softpaq/sp38001-38500/sp38147.exe

The HP Integrated Module is your Bluetooth Wireless
here:
ftp://ftp.hp.com/pub/softpaq/sp38501-39000/sp38983.exe

Microsoft Windows Installer 3.1 (install before wireless driver)
Download

Broadcom Wireless LAN Driver
ftp://ftp.hp.com/pub/softpaq/sp39001-39500/sp39243.exe

HP Quick Launch Buttons 
ftp://ftp.hp.com/pub/softpaq/sp39001-39500/sp39425.exe

HP 3D DriveGuard 1.10 A 
here:
ftp://ftp.hp.com/pub/softpaq/sp39001-39500/sp39040.exe

You may found webcam, Synaptics Touchpad Driver, Marvell Yukon Gigabit Ethernet Controller Driver 
from this site:
http://h10025.www1.hp.com/ewfrf/wc/softwareList?os=228&lc=en&dlc=en&cc=us&lang=en&product=3795191