How to Stop the C00021A Fatal System XP Error
Posted on Monday, June 27, 2011
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1. Insert the XP CD into the computer.
2. Restart the computer. Press any key when prompted to boot from CD.
3. Press 'Enter' at the first screen and 'F8' at the license terms.
4. Highlight the drive containing Windows XP. Press 'R' to repair the operating system, which will curb the C00021A fatal error.
