This image shows the Operating System Images section of the Infrastructure Settings page.

Under Operating System Images, Linux Image, there is a switch labelled Marketplace Image that is set to NO. 

There is sample text in the Image OCID field. There is a red exclamation point beside the Image OCID field.
The Image Name area is blank.

Under Windows Image, the Image OCID field is blank. There is a red exclamation point beside the Image OCID field.
The Image Name area is blank.