This image shows the Operating System Images section of the Infrastructure Settings page after clicking Save and Refresh OCI Metadata.

Under Operating System Images, Linux Image, there is a switch labelled Marketplace Image that is set to YES. 
There is a selection in the Image Version drop-down list.
In the Image OCID field there is sample text. There is a green check mark beside the Image OCID field.

Under Windows Image, there is sample text in the Image OCID and Image Name fields. There is a green check mark beside the Image OCID field.