The drive letters are logically assigned and X is the default in the recover mode (for the recovery mode, not where the operating system is installed) Dual boating adds complexity to the process of repairing a system. I would recommend running any other operating systems as VMs instead. To the second image a system image backup is something you would have had to create to use.
I would suspect the reset isn't working due to the dual boot setup. A backup of data and a clean install will be the quickest way to get the system back up.