Error: How to Reinstall Rundll32.Exe for Windows XP

1. Place the XP CD into your computer.
2. Restart the computer. Press any key as prompted to boot from CD.
3. Press "Enter" at the initial screen and "F8" at the license terms.
4. Highlight the drive containing Windows XP. Press "R" to repair the operating system, copying over a fresh version of the Rundll32.exe file.