This is due to "Intel Graphics and Media control panel" software setting, you can follow the instruction below:
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Right click on desktop and choose [Graphic Properties].

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Select [Advanced Mode] > [OK].

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Click [Display] > [General Settings] > [Display] and choose your monitor accordingly. Thereafter, set [Scaling] to [Customize Aspect Ratio] and make both [Horizontal Scaling] and [Vertical Scaling] to 100%. Click [OK] to finalize the procedure.
