Your laptop has a 400 GB drive and currently reserves, by default, 2% (8 GB) for shadow copies.
You need to reserve more space for previous versions of files.
What should you do?

A.
From System Properties, System Protection, expand the Max usage to 20 GB.

B.
From System Properties, System Protection, turn off system protection.

C.
From Disk Properties, change the Quota Settings from 8 GB to 20 GB.

D.
From System Properties, System Protection, set it to only restore previous versions of files.

Explanation:
Control Panel->System and Security. >System [Properties]->System Protection->Configure