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Error Message:

MBR_CHECKSUM_MISMATCH

Explanation:

This message occurs during the boot process when the MBR checksum the system calculates does not match the checksum passed in by the loader. This is usually an indication of a virus. There are many forms of viruses and not all can be detected. The newer ones usually can only be detected by a virus scanner that has recently been upgraded.

User Action:

Boot a write-protected disk containing a virus scanner and attempt to clean out the infection.

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