Wednesday, December 7, 2011

Compaq CQ40-502AU Windows XP

Laptop Problem

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Below is the procedure to install Driver for Compaq CQ40 Successfully!

dotNet Framework 2.0 :

Audio Driver :
Download (sp33867)

Windows XP SP3 :
If MS-UAA above failed, use this patch: KB835221.exe
restart after install MS-UAA

Conexant High Definition Audio
Download (sp39671)


Download (SP41500)

Download and install the driver, you will get the error while installing.
Perform the below steps to fix the issue.

Part 1 :
1. Click on Start and select Run(Windows Button + R). Now type devmgmt.msc and press Enter.
2. Right click on “Audio Device on High Definition Audio Bus” and select "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 or C:\swsetup\sp41500 (test which work) folder and select the .inf
    file and click open and Continue with the onscreen instructions.

Part 2 :
After installing the driver in Part 1
ATI HD Audio Device :

VGA Driver :
ATI Mobility Radeon HD 3200/3450/4200/4330 Graphics
(dotNetFramework installed first)

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


Realtek RTL8168C(P)/8111C(P) PCI-E Gigabit Ethernet NIC

Wireless Driver :
Broadcom :  Download

Intel(R) PRO/Wireless 3945ABG Network Connection

Modem Driver :
High Definition Audio Modem

Card Reader Driver :
JMB38X Card Reader Host Controller

Touchpad Driver :

Cyberlink Youcam 2.0 :

ENE-CIR Receiver :

Chipset Driver :
AMD Chipset Driver.

You can download the driver for windows 7 32bit and 64bit HERE. & Vista 32bit and 64bit HERE

Related Post : 
1) DriverMax 5.0 Full - Software to find driver automatically

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