Something is really wrong with Windows though if updating the OS and installing fresh drivers can't fix it. MS need to look into this, what is causing the issue. We need better diagnostics tools for drivers, and features.
NOT FIXED - Black Screen HDR After Adjusting Volume 1803, 1903, 1909, 2004
*UPDATE* March 2021
It appears there is light at the end of the tunnel. MS is working on enhancing the HDR feature on Windows 10 to another level. With that there should be massive improvements in the way its implemented and work with games and the OS (I HOPE). I've personally called MS and escalated this to one of their engineers. Hope is on the way, see article below.
https://devblogs.microsoft.com/directx/auto-hdr-preview-for-pc-available-today/
*UPDATE* June 2020
So if you install the latest Nvidia driver 451.48 or later combined with Windows 10 v.2004 it completely fixes the issue for me at least.. I see some post below of users saying it isn't working so I am changing the thread to not fixed.
I've tested past, current versions of Windows and scoured various forums for a fix. This is happening to many many people yet still not fixed... The Windows 10 Volume OSD turns HDR off or appears to have some sort of affect whilst adjusting the volume. When the Windows volume overlay appears on screen while HDR is enabled in fullscreen apps or games, the monitor goes dark. Once the overlay is off screen it turns back on. This is very annoying as I would like to use HDR without my screen turning off in the middle of competitive gaming. Also for what ever reason Nvidia Shadow play or recording doesnt work while HDR is enabled in Windows. Can someone make note of this and please fix it... I know this has been reported before but even on the insider additions of Windows the issues still resides.. :(
The only temp fix I can find is turning on your mouse trail in the mouse settings in windows.. This eliminates the issue but who the heck wants a mouse trail!
Windows for home | Windows 10 | Gaming
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Anonymous
2020-08-22T10:40:57+00:00 -
Anonymous
2020-08-21T16:18:15+00:00 So after doing a clean install, some games at least don't exhibit the problem any longer when in HDR mode. There are other problems still with HDR, like sometimes Edge and other apps will flicker their brightness, at really weird times, like moussing over a particular text-block on the screen for example - yep, that's just bonkers.
I'm wondering if it was motherboard drivers or audio drivers now, I read somewhere recently that audio drivers were causing this issue for one person. It's hard to imagine, but I'm running the same graphics drivers as before.
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Anonymous
2020-06-26T17:49:39+00:00 Yeah I'm downloading the new driver 451.48 right now. This driver is very very very recent. I hope it fixes this, I don't care if my frame rate drops a bit when changing the volume just as long as thats as far as it goes. I don't want my screen turning off all the time, it's prevented me from running a lot of apps. A lot of apps, especially video editing apps and photoshop software prefer that you set the monitor you want to use as the primary, but so do games. I can't have both with the OSD ruining primary monitor gaming in HDR. And a lot of games don't let you select which monitor to use so I can't run a lot of games in HDR or 4K without the OSD blackscreening it.
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Anonymous
2020-06-26T15:03:23+00:00 yes...
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Anonymous
2020-06-26T11:59:34+00:00 It appears the problem has been fixed with NVIDIA driver 451.48 tested Forza 7 (windows app) and Shadow of the Tomb Raider (steam) using Game Bar 5.320.6242.0 both in HDR and Game Bar works perfectly.