If you installed Windows XP SP2 Release Candidate 1 or another pre-release build of Windows XP SP2, uninstall it by using Add/Remove Programs by following these steps:
1.
Click Start, and then click Control Panel.
2.
Click Add or Remove Programs.
3.
Select the Show Updates check box.
4.
Click Windows XP Service Pack 2, and then click Remove.
5.
When the Windows XP Service Pack 2 Removal Wizard opens, follow the prompts. When the wizard completes, click Finish.
Note: If you choose to remove SP2, a dialog box displays a list of the programs that you installed after you installed SP2. If you continue with the removal, these programs might not work correctly.
SP2 Doesn't show up -anywhere- under Add/Remove Programs..that's pretty much the source of this whole problem ;)
1. Add/Remove programs--make sure to put a check mark in 'Show Updates' (You didn't say WHY you couldn't uninstall)
or...
2. Boot onto WinXP CD and go to Recovery Console. Sign in to it.
At the command prompt, type--or add as needed
Windows\$NTServicePackUninstall$\SPunist\Batch Spuninst.txt
-this is slow as it is through a DOS version of the Uninstall, also if you did not choose to archive files, you are out of luck.