I've just gotten a second monitor for my PC at work, and am trying to set it
up. I want the new monitor to be my primary monitor and the old monitor to
be my second monitor. I have never worked with 2 monitors before, so this
is new to me. I've got into Personalize | Display, twice, and set it that
way. However, whenever I reboot the right side monitor becomes the primary
monitor, and the left side becomes the secondary monitor. Why is that?
I'm working with Windows 7 Ultimate, 32-bit, on a Dell OptiPlex 755 PC.
Best Answer
What you need to do is right click on the desktop and go to "Screen Resolution". This Is where you can set your primary monitor. Once you set the "multiple displays" to "extend these displays" you can then click the "identify" button to figure out which one is monitor 1 and monitor 2.
Once you figure out which monitor you want to use you can click on the monitor in the menu and then check the "Make this my main display" button. If you don't have that button available, then that monitor is already you primary monitor.
Here's a pic from a random blog post that has a photo of the menu you are looking for.