Compaq Presario CQ50-142US Windows XP Driver

Requirements:
Install Windows Installer 3.1 First:Download (external Link)
Install Netframework 2.0 : Download

Chipset:
Intel Chipset Installation Utility for ICH9
Version:9.1.1.1016 A, 2.31MB
Download

Audio Drivers
You must Install MS-UAA before installing audio drivers. Reboot after MS-UAA and install audio drivers. Please don;t skip this step to make sure your audio installed properly.

Microsoft Universal Audio Architecture (UAA)
Knowledge Base 888111 (KB888111)
Download (Intel site) 
Download (from HP)

-Restart/Reboot.-

Conextant Smart Audio 221 Drivers
Version 3.49.4.51 1.02MB
Download (mf link)
Download (sd link)
Download (4s link)

Instruction to Install Audio Drivers:
 (if you need instruction with picture you can read here)
1. Unzip the file, i suggest unzip it at desktop and you will get CQSmartAudio_221 folder.
2. Remember that folder location we will use it later.
3. Open device manager by click start and select RUN, type DEVMGMT.MSC and press enter.
4. A device manager will open, look for Audio Device on High Def Bus. Right click and select update driver.
5. Select No to connect.
6. Select Don't Search, I will choose the driver to install,
7. For the Hardware Type select 'Show All Devices'
8. Remove the check (uncheck) from "Show Compatible Hardware" and click on "Have Disk".
9. Browse to  CQSmartAudio_221 folder we extract earlier and select WAHER5a.inf.
10. Continue with on screen installation until finish. Ignore if it prompt or complaint. reboot.


HDMI
Nvidia HDMI Audio Drivers
Verison 1.00.00.59 WHQL 5.67MB
Download

Graphic:
Mobile Intel 4 Series Express Chipset Family Graphics Driver
Version 1.00 REV A
Download 

Nvidia GeForce 9200M GE
Version 186.81 WHQL 110/112MB
Download (32-bit)
Download (64-bit)


Webcam
Cyberlink Youcam Software
Version 2.0.2519 46MB
Download

Touchpad:
Synaptic Touchpad Driver
Version 10.0.13.2 26MB
Download

Button:
HP Quick Launch Button
Version 10.0.13.2  24.26MB
Download

Card Reader
Realtek USB 2.0 Card Reader Driver
Version 6.0.6000.20113 A 9.66MB
Download


Wireless:
(3 available drivers, choose 1 base on your specs or test which work for your model)
Atheros 2011 (AR5007) Wireless Drivers
Version 9.20  81.94MB
Download

Broadcom wireless LAN Driver (BCM43XX)
Version 5.60.48.31 10.27M
Download

Intel Wireless LAN Drivers
Version 14.0 14.64MB
Download


Tools and Utilities - Optional Downloads:

Lightscribe System Software:
Version 1.18.1.1 A 8.4M
Download

HP Wireless Assistant
Version:3.50.11.2, 3.81M
Download

Motorola SoftStylus 
Version:2.2.119.2, 42.73M
Download

Additional Resources:
For further reading and information. Note that this is only description and information taht may be helpful.

1. Hp Quicklaunch, other version you can also use is: sp39425.exe
2. Card Reader : You can download driver directly from Realtek: Download link
3. There 2 chipset drivers available above, it is optional and you can choose which work best for you.
4. Wireless Atheros: It support wide range of wireless device mainly on 5xxx series.
5. Atheros Wireless: If the driver file is too big, you can use older version: sp39403.exe
6. For the Hardware Type select 'Show All Devices'
Remove the check from "Show Compatible Hardware" and click on "Have Disk".