Check if you have enough disk space for backup.
Try solutions from here:
Not enough space on drives for backup to use vss.
Sure I have enough space. Like I said I was going to replace an existing image that I felt had become obsolete. There is 104GB free space on the drive that held the old image - ample space, I should think, for a system image.
But I will check out your tip, thanks.
OK, when I followed the provided link, it said:
Usually this error come when 100 MB hidden System Reserved partition created by Windows 7 does not have enough space to store a shadow copy. Please check the freespace on this volume. Follow the following steps:
1. Start -> Computer -> Right click -> Manage
2. Select Storage ->...