How to Uninstall Windows XP and Revert to a Previous Operating System

Not satisfied with Windows XP?

In that case read following article!

How to Uninstall Windows XP and Revert to a Previous Operating System
The information in this article applies to:
Microsoft Windows XP Home Edition
Microsoft Windows XP Professional

This article was previously published under Q303661

SUMMARY

This article describes how to uninstall Windows XP after an upgrade (by using a qualifying upgrade path) has completed successfully. This would include the successful creation of the Windows XP uninstallation files (Backup.cab and Boot.cab) during the initial upgrade.
MORE INFORMATION
Important Notes
If enough space is available, the Windows XP uninstallation files are automatically saved during the upgrade process.
If the Windows XP uninstallation files have been removed from the computer, you cannot use the uninstallation process that is described in this article.
Any programs that were installed prior to the Windows XP upgrade will be preserved. Additionally, any programs that were installed after the Windows XP upgrade will not be available after you uninstall Windows XP. You may need to reinstall these programs.
To be able to successfully uninstall Windows XP, you must have upgraded from Microsoft Windows 98, Microsoft Windows 98 Second Edition, or Microsoft Windows Millennium Edition (Me).

NOTE: If you upgraded from Microsoft Windows 2000 or Windows NT 4.0, you cannot uninstall Windows XP.
How to Uninstall Windows XP
Restart your computer in Safe mode. To do so, press the F8 key while Windows is starting.
Log on using the Administrator account.
Click Start, click Control Panel, and then double-click Add or Remove Programs.
In the list of installed programs, double-click Uninstall Windows XP.

NOTE: If Uninstall Windows XP is not in the list of installed programs, you must manually reinstall Windows 98 or Windows Me. If this is the case, make sure to back up all of your critical data before you reinstall Windows 98 or Windows Me.
When you receive the "Are you sure you want to uninstall Windows XP and restore your previous operating system?" message, click Yes to start the Windows XP uninstallation process.
After the Windows XP uninstallation process is finished, your computer will shutdown, restart, and then boot to the previously-installed operating system.
For additional information about related topics, click the article numbers below to view the articles in the Microsoft Knowledge Base:
303160 Uninstall Option Not Available on Windows XP

292607 Windows XP Supported Upgrade Paths

308008 How to Remove the Windows XP Uninstallation Files

308233 How to Start the Windows XP Uninstallation Process from a Command Prompt

303661 How to Uninstall Windows XP and Revert to a Previous Operating System

If You Intend to Return to Windows 95, Windows NT, or Windows 2000
If you intend to remove Windows XP and return to Microsoft Windows 95, Microsoft Windows NT, or Windows 2000, you must reinstall Windows 95, Windows NT, or Windows 2000. Restart your computer in Safe mode, and then back up all of your critical data before you reinstall Windows 95, Windows NT, or Windows 2000.

Source of the article: http://support.microsoft.com/default.aspx?scid=kb;en-us;303661

Good luck!

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