How to Fix an HTTP 500 Internal Server Error in Vista

1. Insert the Vista installation disk into your computer and restart your computer.
2. Press any key as the computer loads to boot from the disk.
3. Input your language preference, keyboard configuration and currency type from the drop-down menu.
4. Select the option to 'Repair this Computer.'
5. Highlight your installation of Vista and press 'Next.' The system will auto-detect errors and replace the faulty server files generating the problem.