Recommended Operating System :
Windows XP 32-bit and Windows 7 32-bit. Don't Install 64-bit operating system because 64-bit require 4GB of RAM, If you did installed 64-bit it will decrease your V2623TS performance.
Windows 7 Drivers
Chipset drivers
Intel Chipset Installation Utility
Intel still continue to support this chipset for Windows 7 - so no hustle for this one.
Compatibility : Windows 7 32/64-bit
Download (HP)
Download (Latest from Intel)
Graphic
Mobile Intel 915GM/GMS, 910GL Express Chipset Family Drivers
I already write a brief tutorial to install this graphic drivers,
Download and Installation
Audio
Conexant AC-Link Audio Driver (AC97)
First try with this latest drivers : Download
If didn't work use this MOD (Original) driver : Download
Button - Keyboard
HP Quicklaunch Button
Download
Bluetooth
Software Support for HP Integrated Module with Bluetooth Wireless Technology
(By default bluetooth automatically installed, this software provide functionality to use your bluetooth device).
Download
LAN/Ethernet
Compaq Presario V2374AP LAN/Ethernet Driver
Realtek RTL8139/810x Family Fast Ethernet NIC Driver
Download link
Webcam
Cyberlink YouCam Software
(By default the webcam automatically Installed, Install this utility to use your webcam)
Download
Wireless
If you have Intel Wireless:
Intel Wireless PRO 2200BG Driver
Intel discontinue support for this device for windows 7, so you need to install it by using the method I described here:
Download and Installation Guide
If you have Broadcom Wireless:
Broadcom Wireless LAN Driver for Microsoft Windows 7
Download
Touchpad
Synaptic Touchpad Drivers
Synaptic aways provide the latest drivers on thier website, download it here:
Download
Card Reader
Texas instrument Card Reader Driver
Download
Original (Windows XP Drivers)
All of your original XP drivers located here: Link - Below I provided Quick Download Link, and I added Chipset driver on the list (Chipset drivers is not available on HP download site).
Chipset : Download
Audio : Download
Graphic : Download
Quicklaunch : Download
Touchpad : Download
Modem : Download
Wireless Intel : Download
Wireless Broadcom : Download
Bluetooth : Download
Card Reader : Download