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HP Notebook PCs - Issues with Downgrading HP Pavilion and Compaq Presario PCs to Windows XP and Restoring Windows Vista
This document pertains to HP Pavilion and Compaq Presario Notebook PCs that shipped with Windows Vista.
This document does not apply to Commercial Notebook and Desktop PCs. Select business notebook models; including the 2510p, 2710p, 6910p, 8510p, 8710p, 6510b 6515b, 6710b, and 6715b, as well as other models support Windows XP.
Issues you will experience if you downgrade from Vista to XP
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:
If you decide to downgrade your PC from Vista to XP, in spite of the known hardware and software problems, or if you have already tried to make the change and your PC does not work properly, read the other sections of this document. There is also a section that discusses the problems with setting up a dual-boot system.
Things to do before you make any changes to your PC
If you have decided to downgrade from Vista to XP, or to make any other OS changes, in spite of the known hardware and software problems, you may find the following recommendations useful.
Things to do if you changed the OS and your PC is not working properly
If you have already downgraded your computer from Vista to Windows XP, you have probably discovered that your PC does not work properly. You may have noticed that features like sound, DVD, or the webcam on your new PC have stopped working. You are probably wondering where you can find the right XP drivers. HP does NOT provide XP-compatible drivers for PCs that were designed exclusively for Vista. If your PC shipped with Vista, HP supports the installed hardware and software while the PC is operating with the Vista operating system, according to the written agreements.
NOTE: You may attempt to use non-Vista drivers and programs that are provided by other companies; however, HP cannot provide technical support or diagnose potential hardware issues until you reinstall the original Vista operating system.
To resolve your hardware and software problems, you MUST reinstall the Vista operating system that was installed on your PC as follows:
Things to do if you upgraded from Windows XP to Vista and want to return to XP
If you purchased a Vista-capable HP notebook PC that shipped with Windows XP, and you upgraded it to Vista, you can reinstall XP, provided that you reinstall all of the XP-compatible drivers.
NOTE: In all cases, the BIOS and the hardware drivers must be designed as compatible with the operating system. Specifically, XP drivers will not work with the Vista OS, and Vista drivers will not work with the XP OS.
To resolve your hardware and software problems, you may reinstall the XP operating system that was installed on your PC as follows:
Reasons not to try a dual-boot system
While documentation on how to use dual-booting may be available on the web, HP does not support computers that have been set up in a dual-boot configuration. The dual-boot requires hardware drivers for both operating systems, and HP does not provide drivers for components that were not designed for the specific operating system. Such a configuration change may require you to reinstall the original software image when troubleshooting possible software and hardware issues with technical support.
Additionally, even if you could find some generic third-party drivers that would allow you to setup a dual-boot configuration on your notebook, you should consider the size of your hard drive. Each operating system takes up a considerable amount of space on the hard drive. Installing both XP and Vista may limit the amount of space that you have available for other applications, which will degrade performance.