1. Boot into the Windows XP Recovery Console using the Windows XP CD-ROM or using the start-up option (if available).
2. Type in the password for your installation of Windows XP, and press Enter.
3. When you see the C:\Windows Prompt, type this command:
4. DIR $*
5. This lists all the folder starting with the letter $.
6. All the $NtUninstall.... folders are now displayed. $NtUninstall folders are nothing but the Hotfix backup folders, which contains the original version of the system files, before the hotfix was installed.
7. Note down the Hotfix numbers that match the date you installed the update that has caused the problem.
8. Spot the Hotfix that you want to remove, and change to that directory by typing this:
9. CHDIR $NtUninstallKBnnnnnn$\spuninst
10. Once you're in that folder, you'll need to execute the spuninst.txt which contains DOS commands, similar to a .BAT file. The command instructions in this spuninst.txt file will actually copy the original system files to their respective folders. To run the spuninst.txt file, type this: BATCH spuninst.txt
11. The hotfix will be uninstalled. Restart, and see if the problem is resolved. If Windows loads normally, open Add/Remove Programs and completely uninstall that particular hotfix. This ensures that the additional files, Add/Remove entries and other registry keys added by the Hotfix are removed completely.

If Windows does not load, load Recovery Console again and then follow the above procedure to remove the additional Hotfixes one at a time, to isolate the problem. If you install multiple Hotfixes in a single session, it's difficult to point out which of the installed Hotfixes is preventing Windows XP from loading.