Screen brightness changes when moving cursor over an icon on the Taskbar

Question

_{Thursday, September 12, 2019 7:59 PM}

I setup a Windows 10 1803 computer for a customer, which has an HDMI connection to his big screen monitor.

He called me to say that his screen gets brighter when he hovers the cursor over an icon on his taskbar.  I have changed the following settings and they have not had any effect on this problem:
Color > Night light
Color > Transparency effects
Taskbar > Autohide
Taskbar > Peek
Focus Assist
Different themes

This did not happen when he was using his old computer, which was Windows 7.

Any ideas?

Thank you in advance!

All replies (6)

_{Thursday, September 12, 2019 11:23 PM}

I shall suggest you to update the graphic card driver.

Visit the support site of manufacturer to download and install the latest driver compatible with the graphic card.

S.Sengupta,Microsoft MVP Windows and Devices for IT, Windows Insider MVP

_{Friday, September 13, 2019 1:42 AM}

Hi,

Check and update hardware driver, including video driver is recommended:

1. Open Device Manager - Display adapters – right click the adapter name and select Update driver.
2. Or, you can manually download it from manufacturer’s website, make sure that the driver version is compatible with current OS version. 

How to: Install and Update Hardware Drivers in Windows 10:
https://answers.microsoft.com/en-us/windows/forum/windows_10-hardware-winpc/how-to-install-and-update-hardware-drivers-in/a97bbbd1-9973-4d66-9a5b-291300006293

If problem persists, open Run, type Winver and end with Enter to check current OS build number, compare the number with below link, make sure that your system is fully patched with Windows Update/Hotfix, it would be helpful for resolving some known issues and improving the performance:
https://support.microsoft.com/en-sg/help/4099479

Best Regards,
Eve Wang

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_{Tuesday, September 24, 2019 8:46 AM}

Hi,

How things are going there on this issue?

Please let me know if you would like further assistance.

Best Regards,
Eve Wang   

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If you have feedback for TechNet Subscriber Support, contact [email protected].

_{Thursday, September 26, 2019 9:38 AM}

Hi,

Is there any update?

Please click “Mark as answer” if any of above reply is helpful. It would make this reply to the top and easier to be found for other people who has the similar problem.

Best Regards,
Eve Wang

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_{Thursday, September 26, 2019 1:00 PM}

I apologize for the delay in returning to this post and appreciate your recommendation.

The latest video driver is installed but there is still a problem.

_{Friday, September 27, 2019 8:01 AM}

Hi,

Please try to re-start system in Safe Mode (display driver will be disabled during this mode), then confirm that if problem happens again.

Start your PC in safe mode in Windows 10:
https://support.microsoft.com/en-hk/help/12376/windows-10-start-your-pc-in-safe-mode

Best Regards,
Eve Wang

Please remember to mark the replies as answers if they help.
If you have feedback for TechNet Subscriber Support, contact [email protected].