If you experience issues with Solidworks, displaying strange graphics or duplicated screens you can disable Windows Display Scaling for the application.
Close down Solidworks.
On the Desktop, find the Solidworks icon, using the right mouse button, click on the icon and go to properties.
Switch to the Compatibility tab, then click Change High DPI Settings.
Under High DPI Scaling override, tick the box and make sure it is set to Application in the dropdown menu.
You can now open Solidworks and your display issues should be resolved.