On this PC is W10 Home (64-bit). Also installed is Macrium Reflect (free edition). I am somewhat of a novice, so bear with me please.
Originally on this PC, there was an installation of W10, which went wrong and became unbootable. Happily, my nephew was able to intervene and install another W10.
When the PC starts up there are two options offered - the current W10, and the old one (whiich has a command symbol next to it). I have been told the old one is repairable. Although there was no W10 DVD with the PC (it was bought seven years ago), and W7 was on a recovery partition, I did use Microsoft Media Creation Tooll to downloiad and make a USB stick with W10 on there.
Beforehand though, I would need to make a backup of the system. Would I use Image, or Clone (I don't understand these things much) from Macrium. I would appreciate a tutorial to help me for in the future, as well as any advice as to the best course of action to take, before trying the repair.
We have a Seagate USB backup drive.