Is Premiere Elements 11 the only application on the Windows 10 computer that is behaving this way? Are you saying that the whole computer display for all is giving you small thumbnails that would be characteristic of screen resolution set too high.
Did Windows 10 come pre-installed or did you have to upgrade to Windows 10 yourself.
Please go to Control Panel
What is the description of your computer monitor?
Please go to Control Panel/Appearance and Personalization/Display. In the left column of the page, click on Adjust Resolution.
What does the Resolution field show for resolution and is (recommended) listed next to the values shown?
Please review, consider, supply more details if you have more, and then we can decide what next based on the details in your reply.
Add On...Since this is a new computer, I would contact and consult with the seller of the computer to verify its working condition. But, let us discuss the matters mentioned above before that.