I wanted to have multiple screens for when I use my laptop, so I took my Lenovo Ideapad P500 and connected it to my TV with an HDMI cable. I got it to project a second screen to my TV and could drag programs from my laptop screen to my TV and vice versa. So then I used the VGA port on my laptop to connect to a regular computer monitor; however, there was no image and I could not get a third screen on my external monitor. In my computers settings, I found out that it recognized the external monitor as a display but it would not project to it. I eventually found out that I could take out the TV HDMI connection and then get a display on the external monitor but when I plugged the HDMI back in, it would recognize the TV as a monitor but not project a third screen to it.
Why can't I get both of my external monitors, along with my regular laptop monitor, to project 3 different screens?