It appears to have an SiS 760/964 chipset and SiS Mirage2 onboard video. Here's HP/Compaq's
spec page for it.
So you want to
1) install Service Pack 2 for WinXP. Do this from offline using a CD or USB drive (
link to full SP2 download), or from behind a firewall, don't just go flyin' out onto the Internet with it in SP1 condition unless it's got firewall protection. This also gets you USB 2.0 support and DirectX 9.0C.
2) download and install the SiS AGP, SATA and IDE drivers from
here. Reboot as needed. Do these before the actual video driver.
3) download and install the SiS Mirage2 video drivers from the same site (IGP Graphics Driver, SiS760 Series version). Reboot.
4) download and install the Realtek audio drivers from
here (the Download Now button at bottom). Different model, but that should work anyway.
Hope that helps
