MBR is corrupt and cannot be resolve.

Johnson Lee

Reputable
Aug 1, 2014
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4,510
My comp showed MBR is corrupt.

I have tried both bootrec /fixmbr and bootrec /fixboot but it display "A device attached to the system is not functioning. "

What could be this problem and how should I resolve it?
 
Solution
It might be the MBR or the partition for the MBR is completely corrupt. But since it displays that message your drive could be failing or the sata cable/controller is.