A:Answer Download the Onscreen Control and monitor driver from the CD that came with the box. Either that or go directly to the LG website, enter your monitor model name and digitally download the Onscreen Control and driver from there. Without them, the resolution for the monitor was 1440p and I couldn't change it, but after downloading it, it changed to 1080p. Using a laptop, the resolution won't adjust correctly if you "Duplicate these displays", so make sure to "Extend" or "Display only",