Compaq CQ40-421TU Windows XP Driver

First Install  Netframework: (require for Quick Launch Installation).
Net framework 2.0
Download


DRIVERS (18)

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Chipset
Intel Chipset Installation Utility
Version 9.1.1.1015 A 2.2MB (xp, vista, 7)
Download

Storage
Intel Matrix Storage Manager Driver 
Version:8.9.2.1002 A, 18.17M
Download 

Graphic/VGA
Mobile Intel 4 Series Express Chipset Family Graphics Driver
Version 1.00 REV A 19.28MB
Download

Nvidia GeForce G 105M/G 103M For windows XP
Version 2.66.58WHQL  118MB
Download

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Audio Drivers:
Since there are no best single driver available, you have to follow this step carefully.

1. Install MS-UAA first:
Windows XP, XP SP2: Download  (KB888111)
Windows XP SP3: Download  (KB835221)

Restart and then install audio drivers below.

2. Install the Audio:
IDT High Definition Audio Codec
(2 drivers, if the first one didn't work, use 2nd drivers)
Download (SP41693)
Download (SP39671)

 If resulting in error, ignore it and proceed  by manually install the drivers:

Download and install the driver, you will get the error while  installing.
Perform the below steps to fix the issue.
1. Click on Start and select Run. Now type devmgmt.msc and press enter.
2. Right click on "Audio device on High Definition Audio Bus" and click  Update driver.
3. Select "Install from a list or specific location".
4. Click Next. Then select "Don't search, I will choose the driver to  install".
5. Click Next and then select "Sound, video and game controller" from  the list.
6. Click Next and then click Have Disk.
7. Click Browse C:\swsetup\sp39671 folder and select the .inf   file and click open and Continue with the onscreen instructions.

Fo instruction with pictures read here:
Manually  install Audio Drivers.

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Wireless:
(3 drivers, choose 1 base on your specification) 

Broadcom 4313 a/b/g/n wireless Drivers
Version5.10.91.8 10MB
Download

Intel PRO/Wireless Drivers:
(requires windows installer 3.0 installed first)
Version 5.20 4MB
Download

Atheros Wireless LAN Driver:
Version 2.00B 20.64MB
Download

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Bluetooth:
HP Integrated Module with  Bluetooth Wireless Technology
Version 5.1E  94.68M
Download

Modem
High-Definition Audio (HDA)  Modem Installer and Driver
Version 1.00 A 12.71MB
Download

Lan/Ethernet
Realtek RTL8102E Family  PCI-E Fast Ethernet NIC
Verison 1.00A 4.8MB
Download
updates available here 

Card Reader
JMB38X Card Reader Host Controller
Version 1.00A 3.49MB
Download

Touchpad:
Synaptics Touchpad Driver 
Version:9.1.11 Q, 16.93M
Download

Button:
(Install netframework 2.0 first)

HP Quick-launch Button
Version 6.40B 19MB
Download

Camera
Cyberlink youcam software 2.0 + Driver
Version 2.0.2519 46MB
Download

Others
Lightscribe  system software
Version 1.18.1.1 A 8.4MB
Download


ADDITIONAL INFORMATION

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1. If  you have 7 unknown device, download this file, extract, then right lick on the inf file and select install(Machine.inf)

FOR NVDIA: if  the driver above resulting in error use modded driver below:
Download
3-step  process to install:
1. Download driver, double click and select  extract,
2. Download modded INF and replace original INF in  extracted folder,
3. Install and  reboot

Compaq Presario F733AU Drivers Windows XP

Description:
Please Install according to order:
Before installing the driver i strongly recommend to install the netframework:
Net Framework:
Download

Chipset - From Nvidia
Nvidia nForce 630a - Windows XP/2000
Version: 14.10 Release Date: May 3rd, 2007
Download

Chipset Driver - From HP
 NVIDIA nForce Chipset Driver (C51/MCP51)
Version 8.61A  60.53MB
Download

Graphic/VGA
nVIDIA GeForce 7000M Video Adapter
NVIDIA 32-bit ForceWare GeForce Go 156.55 Download
NVIDIA 64-bit ForceWare GeForce Go 156.55 Download

Wireless
(2 drivers, choose 1 base on your specification)
Broadcom Wireless Driver (sp37950.exe)
Version 6.20E 6.98MB
Download

Atheros 2011 Wlan Driver for XP, Vista and 7
Version 9.20  89MB
Download

Audio/Sound
Before installing audio driver, you need to install MS-UAA frist and restart.

1. MS UAA(required with a reboot before installing audio):
Download


Then Install the audio
Conexant SmartAudio 221:
Download
 
Install the audio driver and ignore if there is an error.
1. Click on Start and select Run. Type DEVMGMT.MSC and press enter.
2. Right click on "Audio device on High Definition Audio Bus" and click Update driver.
3. Select "Install from a list or specific location"
4. Click Next. Then select "Don't search, I will choose the driver to install"
5. Click Next and then select "Sound, video and game controller".
6. Click Next and then click Have Disk.
7. Click Browse C:\swsetup\sp34200 folder and select the .inf (wis30b2a) file and click open and

Continue with the onscreen instructions.
Ignore XP when it complains.
Reboot.
 
Input
HP Quick Launch Button
Download

Touchpad
Synaptics Touchpad 
Version:10.0.13.2, 24.26M
Download 


Card Reader
Ricoh 5 in 1 Card reader Driver:
R5C832/843 RICOH Controller
Download

Lan/Ethernet
Installed with chipset installation.


Modem:
Conextant Modem Driver
Download (sp33742) 
or
Download (sp37817)
(if direct install failed, install using the same method as audio installation)

Install windows XP in compaq presario cq40-337tu

Update Your Bios here. There are big changes in this new version.

Here is the guide to install XP,

First make vista backup:here

Prepare this material:

Download Nlite: Download

Sata controller: Download
32-bit Floppy Configuration Utility

A blank CD

You have to create a new windows XP CD using the one that you have:
Here is the guide to slipstream: GUIDE