Windows 10: How do I fix my primary monitor to boot to login screen?

I cannot boot to the windows login screen, I think it’s because Windows is detecting a third monitor and showing it there. Everything works and earlier I was able to get in I just couldn’t access my settings because windows was displaying it to a different monitor I don’t have. Now I can’t get into my computer at all, i can’t get to login screen and neither monitor lets me do anything, Can’t do keyboard commands.

:)

 

Monitor Primary monitor layout switches upon second monitor power off

Hi alts63,

One of the possible reasons why your primary monitor layout switches is that the rotation lock option is turned on. In order to turn that off and fix the issue, please follow these steps:

1. Press Windows key + A on your keyboard to open Action Center.
2. Click the Expand button.
3. Click the Rotation lock to turn it off.

Let us know the result for us to help you further.

Regards.

 

View The Screens Of Extended Monitors From The Primary Monitor.​

Hi, I extended the screen of my PC to multiple devices. And want to see the screen of connected devices in my primary monitor to know what is showing on the screen of those devices because the non-primary devices are not directly visible to me.

***Moved From: Windows 10/Windows settings***

***Changed Original Title From: Want to see all the non-primary extended screens in the primary monitor's screen.***

 

W10 hangs prior to login screen


I have solved the issue with the login screen not appearing on my (dual boot) W10 RTM system.

Last week I copied some PowerPoint slides from a friends laptop to a USB3 flash drive to display them on my monitor. This was done while I was booted into the "Insider" system. After showing the slides I removed the flash drive and then saw that my monitor arrangement had been changed, from "Extend ... "" to "Duplicate ... " and that my right hand monitor was no longer primary. I fixed the monitior arrangement before shutting down, including making the RH monitor the primary again. So all my reboots since into "Insider" have been successful.

I have a 3rd monitor driven by the onboard graphics, which I only use occasionally. Somehow that became the primary screen, but wasn't powered on then, nor when I have tried to boot into the RTM system.

I didn't connect the changed display settings with the problem on the W10 RTM system. One of the suggestions I saw from someone who had a similar black screen when the login screen should have appeared led me in the right direction. Even though the first part of his post (hit enter and type in password etc) didn't work for me he said "next hit WinKey + P". and doing that brought up my login screen on both monitors that were powered, and the 3rd when I switched it on. The Display Settings had been switched from "Extend ... to "Duplicate ... " as well as making the onboard graphics driven 3rd monitor the primary on this system, just as it had on the "Insider" system. I have now set Display Settings to my liking in the W10 RTM system, and am posting from that system.

Why would displaying PPT slides from a flash drive change the display settings? Was there some carry-over from his laptop, which has onboard graphics driving a single screen?