The ornamental design for a portion of a screendisplay with a graphicuserinterface, as shown and described.
The file of this patent contains a least one drawing/photograph executed in color. Copies of this patent with color drawings/photographs will be provided by the United States Patent and Trademark Office upon request and payment of the necessary fee.
The FIGURE is a front elevational view of a portion of a screen display with a graphic user interface showing my new design.
The broken line showing of the portion of the screen display is for illustrative purposes only and forms no part of the claimed design.