Windows 10: Windows 10 Won't Recognize Built-In Laptop Screen After Major Update

Hi folks - I have Windows 10 pro running on a Toshiba laptop, and after running a major update yesterday, I get a blank screen on the laptop's built-in monitor. To describe this a bit more in detail: when I start up the laptop the "Toshiba" startup image appears on the screen and it makes a startup noise, then the screen goes blank without showing the Windows startup graphic - it is still lit, but it displays all black. However, if I plug in an external monitor with an HDMI cable, that works fine and I'm able to use Windows.


I've tried restarting the computer, which didn't work, and I've looked into a couple of things in Settings->System->Display that haven't helped:


First, I tried going to System->Display->Advanced display settings, and under "Choose a display" there is only one monitor listed to choose from - the external monitor the built-in screen does not appear as an option. This is the case even after clicking on "Detect" on the System->Display page.


Second, I tried going to Device Manager->Monitors. "Generic PnP Monitor" is the one sub-menu item listed there, and when I click on the "Events" tab, there are three recent events listed. It says on 8/7/2020 the day I ran the Windows update, "Device migrated" and "Device configured monitor.inf" and "Device started monitor". I'm not sure if this is relevant to my problem, but I figured I'd mention it just in case.


I did search to see if this problem had been addressed on support forums elsewhere, but I haven't been able to find a solution that works.


Thank you for any tips or help!


Ben

:)

 

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