The new Windows 10 update, also known as Windows 10 May 2020 and Windows 10 2004, was blocked — by Microsoft — from certain devices for a good reason. Its latest bug, which Microsoft acknowledges but has no solution for yet, basically kills your external displays.
Don't worry, though, if and when you see this flaw in the flesh, your monitors haven't actually gone the way of the dodo.
According to a Microsoft support forum post, external displays connected to PCs running Windows 10 version 2004 can go black once you try and use a drawing feature. This happens both in Microsoft's own Office apps and "other apps capable of drawing, such as Whiteboard."
To troubleshoot and check if this is exactly what's happened on your system, open Device Manager (click the Start menu and type in and select "Device Manager") and look under Display adapters, for a yellow triangle with the "!" character in it.
Microsoft doesn't give a timeframe for when it will resolve the bug, but says it's "working to fix the issue in a future version of the operating system."
Windows 10 2004 black screens: What to do
To get your external display working again, simply restart your system. But you don't want to just fix that screen, you want to get productive again.
There are multiple options for how to work with and around this issue, starting with simply not using drawing functions in Windows 10 apps. I'm sure the creatives out there who connect a laptop to an external monitor and use a WACOM tablet to draw are not happy about that idea.
So, my advice for the matter, is to roll back the Windows 10 2004 update. Do not skip step 1 — backing up your system — as doing any system-level changes like this always come with an inherent risk.
- Back up all of your data. We suggest using our best cloud backup services.
- Click Windows + I (that's I, not L), which opens Settings.
- Click Update & Security.
- Click Recovery on the left side of the screen.
- Under "Go back to the previous version of Windows 10" click Get Started.
- Select an option, such as "My apps or devices don’t work on this build."
- Click "No, thanks" when Windows 10 offers to look for an update that fixes this update.
- Click Next.
- Click Next.
- Click "Go back to earlier build."