2 x hard drives on the sytem.
System Restore box is showing:
Local Disk (C) (System)
(blank folder) (C:) (Missing)
What is the 'C Missing' refereing to? Is it an error?
It's probably referring to an older copy of Windows (Win10 updates by
creating a new Windows folder, then swapping and renaming during bootup)
that has somehow got itself stuck in whatever config files Restore looks
at to hunt up its list of possible restore-to locations. So a mild
error, but just ignore that line.