The way I read it is; you wanted or needed to upgrade to win 10 from win 7 and decided to backup your files just in case something went wrong. That was a very good idea and sensible precaution. Congrats. Now for the bad news. When you use a image backup program and it backs up your hard drive, you are in fact creating an image of your complete operating system and all your files.
When you want to restore that image back to your computer, it will try and restore it back to the same condition that the image was made from. Hence it will try and bring your computer back to win 7 - win 10 will not like that.
When you save an image it is usually in one large file even though it is over many disks. Getting information out of that one large file can be hard if you do not have enough computer skills.
Now that you have already updated to win 10 it is too late to go back and file copy the files and folders you require.
I am not saying the case is hopeless, just that you need to be able to understand how to extract files from a compressed format. Unless you have made a mirror image when you did the backup.
If you are lucky and have just upgraded to win 10 you might still have your old system files still on your computer - check your C drive and see if you still have a folder called window.old - if you do you may be in luck, depending on what information you are trying to retrieve.
