If the image does not fill the screen of the monitor or if it looks like the image is slightly too big for the monitor, try below suggestion.
1.Adjust setting on the PC/laptop:
(1)Set native resolution of monitor in your PC/laptop's Display settings.
(2)Change Scaling in Display settings.
Use the graphic card software to change the “Scaling” option to adjust the display size. Intel, AMD and NVidia use different software to accomplish this so please refer the graphic card user guide for detailed information.
2.Adjust setting in monitor:
(1)Change Aspect Ratio
Open the OSD Menu in the monitor to see if there is Aspect Ratio setting and change the setting to Auto.
Some monitors have an overscan setting, to change it please do the following: Press “1” button on the monitor, go to Manual Image Adjust, Overscan, Press “1” to check the box then press “2” to exit.