acerz5600

[wilson1]

When i change resolution from 1920/1080 to 1280/720 i get two displays one above the other but no change in res.When i first set up pc i could change res, but after i updated i could not lower the resolution

[cancross]

Maybe you have inadvertantly done something like this:

To enable the dual monitor feature of your notebook, first ensure that the
second monitor is connected, then, select Start, Control Panel, Display and click
on Settings. Select the secondary monitor (2) icon in the display box and then
click the check box Extend my Windows desktop onto this monitor. Finally, click
Apply to confirm the new settings and click OK to complete the process.

I would check your display settings and uncheck "Extend my windows desktop" and see if this helps.