HP Compaq Presario CQ40 Notebook PC Drivers Download. To download the proper driver, first choose your operating system, then find your device name and click the download button. If you could not find the exact driver for your hardware device or you aren't sure which driver is right one, we have a program that will detect your hardware specifications. As an experiment, I'm trying to install Win10 on an old Compaq laptop that originally ran XP, but over the years, I have upgraded it to Vista,.

1. Cara Install Windows Xp Di Compaq Presario Cq401
2. Windows 7 Minimum Requirements 512mb Ram

First Install Netframework: (require for Quick Launch Installation).
Net framework 2.0
Download
DRIVERS (18)
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

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:swsetupsp39671 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.

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

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

1. If you have 7 unknown device, download this file, extract, then right lick on the inf file and select install(Machine.inf)
FOR NVIDIA: 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
CarsbaseKarena banyaknya teman2 yang sering mengalami kesulitan dan menanyakan bagaimana cara instalasi windows xp pada compaq presariocq40. Maka saya membagi ilmu yang saya dapat langsung dari forum hp. owh ya CQ40 tergolong ke tipe difficult models, karena perlu integrasi driver sata pada cd instalasi windows xp.
cara ini juga bisa dipakai untuk selain cq40, seperti dikutip CQ40, CQ41, CQ35, CQ45, CQ61,dv2, dv3, dv4, dv5, dv6, dv7
langsung aja!
Yang diperlukan dan penting saya beri tanda ( ” ) kutip dan warna hijau untuk memudahkan
owh ya ada 2 cara nih gan
1. downgrade bios (beresiko kalau gagal bios)
2. patch audio (sederhana, tinggal jalankan aja)
Difficult Models
For NEW notebook consumer models e.i. Presario, Pavilion, and HDX models are difficult to downgrade. It is possible task but needs many efforts.
Difficult models are CQ40, CQ35, CQ45, CQ61 Presario models, dv2, dv3, dv4, dv5, dv6, dv7 Pavilion models and all HDX models
Some information from XP downgraders

1. For Intel platform, some of XP downgraders have to utilize devcon utility to restart MS-UAA automatically, XP-SP3 may solve this issue.
2. HP Quick Launch Buttons software do not install proper keyboard layout that lead some Fn feature malfunctions, i.e (brightness control) a BIOS update may solve this problem, please read extra caution below and update it only while in Vista.
3. HP has released XP ENE CIR driver, download below.
4. XP driver is not available for IDT sound chip, “old” Vista driver can be used however, needs some tricks to make it work properly, using audio driver from C:swsetup is reported solve this issue
5. HD and Blue Ray features may not run properly in XP.

Precautions to Take Before BIOS UPDATE

1. Connect the notebook to the AC power supply, exit all other programs, and allow the computer to restart after applying the updated BIOS.
2. Do not turn off the computer while the BIOS is updating. Attempting to cancel this update operation will cause damage to the BIOS and will require that the computer be repaired at an HP authorized facility.

Our recommendation isstay with Vista or wait for Windows 7; however, if you think XP is a must, dual boot would the best way for these notebooks.
berhubung cuma kutipan langsung aja ke TKP gan
nih source : http://h30434.www3.hp.com/t5/Operating-systems-and-software/General-XP-Downgrade-Guide-for-HP-Laptops/m-p/83267
Nih yang penting ( cukup download file dibawah ini, sudah bisa instal xp pada compaq cq40, dan audio sound sudah bunyi )
1.nlite+ perlu ditambah cd windows xp
http://www.4shared.com/file/f2SSTcZM/nLite-1491installer.html

Cara Install Windows Xp Di Compaq Presario Cq401

setelah diinstal langsung jalankan, pilih add driver
2. Sata driver
http://www.4shared.com/file/E7M_oXhp/f6flpy3289.html
setelah add driver, pilih next, terus load file ekstak dari f6flpy3289.zip, terus select all
3. tinggal next aja, terus burning cd windows xp nya
lalu instalkan pada compaq cq40
4. setelah selesai instal MS UAA XP SP3 (Untuk windows xp sp3)
http://www.4shared.com/file/ASwIA5as/_MS_UAA_XP-SP3.html

Windows 7 Minimum Requirements 512mb Ram

5. download dan instal cq audio solution, lalu restart windows, maka otomatis driver sound akan restart secara otomatis. suara sudah keluar
http://www.4shared.com/file/fBDBklpU/CQ_Audio_Solution.html
Nih dokumen pdf general xp downgrade guide
http://www.4shared.com/document/00qblpyU/General_Guide_to_XP_Downgrade_.html
untuk lebih jelas bisa melihat cara pembuatan cd instalasi windows xp menggunakan n-lite
pada blog kawan

How To Install Windows XP on HP Compaq CQ40-108 TU

http://akrom22.wordpress.com/2009/01/15/install-windows-xp-on-hp-compaq-cq40-108-tu/