We claim the ornamental design for a display panel of a programmed computer system with a graphical user interface, as shown and described.
FIG. 1 is a first image of a first embodiment of a display panel of a programmed computer system with a graphical user interface.
FIG. 2 is a second image thereof.
FIG. 3 is a third image thereof.
FIG. 4 is a first image of a second embodiment of a display panel of a programmed computer system with a graphical user interface.
FIG. 5 is a second image thereof; and,
FIG. 6 is a third image thereof.
The broken line showing of a portion of a display panel is for the purpose of illustrating environmental structure and forms no part of the claimed design. The broken lines showing of portions of the graphical user interface within the display panel form no part of the claimed design.
The subject matter shown in the figures includes a process or period in which an arrangement of elements in the graphical user interface changes. This process or period forms no part of the claimed design.