Hello, the problem with Windows 7 backup is that it isn't reliable & therefore is being removed as the Windows installation media can be used as a repair drive to troubleshoot Windows by booting the PC with this.
Windows backup & maybe in the future file history are being deprecated & will eventually be removed, what you’re experiencing may be related to that.
https://docs.microsoft.com/en-us/windows/deskto...
Microsoft recommend using third party software:
“System Image Backup (SIB) Solution
We recommend that users use full-disk backup solutions from other vendors.”
https://support.microsoft.com/en-us/help/403482...
I recommend moving to third party imaging software now before it is removed permanently if you prefer backing up your PC rather than using File history.
Many users recommend Macrium Reflect free:
https://www.macrium.com/reflectfree
I use Macrium which is very reliable & I now wouldn’t be without it..
It has it's own boot drive so you can recover from drive failure & install the image to a new drive.
Note: This is a non-Microsoft website. The page appears to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it.