Eu adiciono esta referência, que pode ser aplicada ao seu problema: Restaure disco rígido de fábrica Capacidade Quando o HDD aparece como 32MB
Here's what typically happens; a large capacity hard drive of between 500GB, 750GB, 1TB and 1.5TB suddenly appears to lose most of its capacity for no apparent reason. In many situations the capacity of the hard drive shrinks to 0.0GB or 32MB (and occasionally 32GB) and becomes inaccessible to the Windows Vista.
What's happening, to put it simply, is that the portion of the hard drive responsible for telling the computer how big it is, is mis-reporting that value. We don't have a good technical explanation for what causes this issue to randomly strike PC users, but suffice to say a portion of the drive firmware known as the LBA48, HPA and DCO records becomes corrupted.
Esta solução usa a Ferramenta de capacidade de restauração do Atola Technology HDD para corrigir o firmware - use com cuidado!