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#50
You can try this below for that specific error message.
Fix: System Restore Failure with Error 0x81000203 - Appuals.com
In that case, I can only think a repair install of Windows 10 may fix it short of a clean install.
Repair Install Windows 10 with an In-place Upgrade
Provided you realise that when you restore a disk image, everything- including data- is restored as it was when you created the image. Thus, unless you take other action, you stand the chance of losing all data changes as well as system changes when you restore disk image of C: in particular.
System Restore points, by contrast, have no impact on personal data.