Aside from churning out new OS revisions, some profit might be had
from looking at current examples of old systems that, in spite of the
status quo, have somehow managed to survive, in daily practical use,
and without the benefits of a re-install.

I recently had my HP computer restored and my hard-drive replaced. Some
software was just added to the PC and now I get a pop up message that I need
to activate Windows to log into my pc.  There is no way around this so I am
unable to use it. When I try to input the activation ...