Windows 10: Black display after inadvertently turning on HDR

I got a black display after inadvertently turning on HDR. I was adding an external 4K monitor to my laptop. I clicked on HDR inadvertently. Both screens started flashing then went black. I rebooted. Lenovo boot logo comes up but the laptop screen stays black. I get a cursor on the external monitor but I don’t on laptop screen. Tried rebooting while repeatedly pressing F8 to boot in safe mode but screen stays black. So I’m locked. What can I do?

:)

 

Extended Display blacks out after turning on the windows HDR option

I have connected an extended display which supports both 4K and HDR and whenever I'm turning on the "Use HDR" for the display under the Windows HD color settings, the extended display blacks out. It comes back after I turn off the HDR. Need help to fix this issue?

 

I could turn on the HDR and WCG setting on initially today when I connected a new HDR TV.

Hello,

Thank you for writing to Microsoft Community Forums.

I understand that you are unable to turn on HDR and WCG color settings in Windows 10. This issue might occur due to incompatible drivers.

I suggest you to roll back the display drivers and check if that helps. Refer the steps mentioned below:

1. Press 'Windows
+ R' key together on your Keyboard.

2. Type 'devmgmt.msc' and hit enter.

3. Expand the display adapter option from the list.

4. Right click on the driver and click on 'Properties'.

5. Click on 'Driver' tab and check for 'Roll Back Driver'. If the roll back option is available, roll back the driver and restart the
computer.

If you are still facing issues with color after enabling HDR on your PC and if you’re using an HDMI connection and your display supports HDR over a DisplayPort connection, use DisplayPort instead to connect your PC and display.

• If HDMI is your only option, use that, and then do one of the following:
  

Reduce the frame rate

• 1. Select Settings > System > Display > Advanced display settings, and then select Display adapter properties.
  2. In the display’s Properties box, select the Monitor tab, select 30 Hertz for the Screen refresh rate, and then select OK.

- OR -

Reduce the resolution

• 1. Select Settings > System > Display > Advanced display settings, and then select Display adapter properties
  2. On the Adapter tab, select List All Modes.

In List All Modes, select the setting that includes 1920 by 1080, 60 Hertz, and then select OK.

Hope it helps.

Sandeep Kumar M

Microsoft Community – Moderator

 

HDR streaming not turning on.

Hi,



Thank you for writing to Microsoft Community Forums.



We understand the concern that the HDR streaming is crashing in your laptop. In order to get clarity and to assist you accordingly, please reply with the answers to the questions below.

• What is the Windows 10 version and Build installed? (Type
  winver in Windows search/Run command)
  
• What is the make and model of the PC?

However, we would like you to update the display/graphics driver to the latest version and also suggest you to refer this article and let us know the status of the issue:

Stream HDR video on Windows 10



We await your response,



Aditya Roy

Microsoft Community – Moderator.