Statement from HP:
If you have an HP Pavilion or Compaq Presario consumer notebook PC
that shipped with Windows Vista, you should not attempt to downgrade
to Windows XP. Changing the operating system (OS) will cause severe
operational problems. Many of the components, such as sound, video,
graphics, network connectivity, drives, or other devices and peripherals,
may have limited functionality, or may not work at all. You should do
some research on the support policies of hardware and software manufacturers,
and review the problems experienced by other users, before you consider
changing the operating system.
You may experience the following conditions if you downgrade an
HP Pavilion or Compaq Presario consumer notebook, which was
designed for Vista, to an older operating system:
HP does not provide Windows XP-compatible drivers for functions such
as sound, video, graphics, network connectivity, drives, or other devices
and peripherals for these consumer notebooks.
Changing the operating system may require you to reinstall the original
software image when troubleshooting possible software and hardware
issues with technical support.
Some component manufacturers do not provide Windows XP-compatible
drivers for components that they designed for Windows Vista.
Even if a third-party company or Windows itself can provide generic drivers
that will allow all of your devices to operate, the performance of your
HP PC may be less than optimal.
Please read the following:
Issues you will experience if you downgrade from Vista to XP:
http://h10025.www1.hp.com/ewfrf/wc/document?docname=c01092639&cc=us&lc=en&dlc=en&product=3439686&dlc=en&lang=en
