Quote Originally Posted by dave.king1 View Post
Windows 10 upgrade free is still there and Google is your friend.

Some time back I lost the C drive and motherboard on my desktop PC ( PS went crazy ) and couldn't reinstall Win 10 so I reinstalled the Win 8.1 Pro and then did the upgrade again because of the way the licencing now works, MS were of little assistance almost to the point of being rude and unhelpful

Hence the reason for my interest

Hmmm...it's possible that, when the power supply went crazy, some important system files may have gotten corrupted, I think I've had that happen to me at least once, Darwin's power distribution systems used to suffer from power outages a few years ago, sometimes a power surge, or spike, can be enough to cause corrupted files.