Windows 10 No login prompt fields after connecting external monitor Solved

  1.    23 Feb 2017 #1

    Windows 10 No login prompt fields after connecting external monitor

    I feel like such a dummy. I have a HP15 laptop and connected an AOC external monitor using a HDMI cable. Everything worked fine and I like my main monitor on my left so I switched my primary to the external monitor and didn't think about switching it back to the laptop before I disconnected the HDMI cable and took my laptop into another room to do some work while watching TV. Everything was fine until I closed the lid and came back the next day and powered it back on. It powers on and all I can see is the Windows background screen with no logon prompt for user account or password. I took it back to my home office and reconnected the external monitor but it is black. I can move the mouse back and forth between the two monitors but cannot get a logon prompt. I tried just normal key sequence to logon - press enter, type my account and password to try and fool it but nothing. I have tried booting in safe mode but it only loads the VGA drive and doesn't see the HDMI. AOC says it is a Windows problem and not theirs. I found a few blogs on pressing the windows key and the right arrow cursors, but to no avail. Any ideas?
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  2. Caledon Ken's Avatar
    Posts : 11,119
    Windows 10 Pro x64 Build 1803
       24 Feb 2017 #2

    Welcome to the TenForums @debback56

    First when you said you tried to fool it by pressing enter you then entered your user name and password. Normally I just enter password. Was this just a typo.

    Next with the monitor attached and after power on, click once with you mouse. Give it 20 secs and then use the Windows Key + P. This brings up a menu although with your screen not on, it may not.

    Next as you have been down through the trouble shooting options you likely noticed System Restore, after you clicked Advance options. You could try restoring to a point before you made these changes with monitor disconnected.

      My ComputerSystem Spec

  3.    24 Feb 2017 #3


    Thanks Ken, I actually had tried both ways on the password because I couldn't remember if my personal laptop had a spot for user account and password or just password (my work does both). I had also tried the Windows Key + P before and it hadn't worked, but I found a blog where it said to do exactly what you suggested. I had to connect the external monitor, reboot, wait until the windows field scene was on my laptop and the black screen was on my external monitor, then press the Windows + P and up popped the projector menu. I was then able to return back the primary to my laptop and whahlah!!! I have been messing with this for a week. I had also tried the system restore but it had an error and wouldn't work. Lesson learned, never make the external screen your primary and always return to one screen before disconnecting the external monitor (have a docking station at work so I am spoiled).
      My ComputerSystem Spec

  4. Caledon Ken's Avatar
    Posts : 11,119
    Windows 10 Pro x64 Build 1803
       24 Feb 2017 #4


    Could I also make another suggestion. Please check out Macrium Reflect. Highly recommended and very reliable.

    If system restore is broken you need a plan B. Many on the forum use both.

    Macrium Reflect - Backup and Restore

      My ComputerSystem Spec


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