I use a second monitor with my laptop instead of using my laptop screen. I use win 10 pro. When I turned on my computer and booted my laptop, my second monitor was blank. Then, I opened my laptop and it booted into windows using the screen on my laptop. Then, I rebooted into safe mode thinking there was some glitch to see if that would correct it. My second monitor was still blank. It is a HP w2207 monitor. I checked the cable connections of my monitor and they were fine. I unplugged them and plugged them back in to see if that would help, but didn't. Then, I clicked win key + P key and clicked "extend" to reset the second monitor feature in windows 10 and nothing seemed to happen after I clicked "extend." When I click on one of the other options, that window disappears after choosing a selection, but didn't when I choose the "extend" option. Any suggestions would be appreciated.