Sign out/Restart/Power off background color change. Blue flash on lock-screen.

Question

Hello,

I have installed a third party black theme for my system: Gray Dark by KDr3w on DeviantArt

Problem:
And everything was perfect until system update, now, each time I signing out, restarting, or powering off, background color of a window with circling dots (Singing out/Restarting/Powering off) is stuck with Blue color, while it was following 3rd party theme color before - Gray. Also each time I lock screen, there is a blue flash transition.

What I have tried:

• Revert back to original theme and unmodified dll files by uninstalling UltraUXThemePatcher.
• Tried to change accent, but the issue got even worse: Red-Blue flash transition on lock-screen + Singing out/Restarting/Powering off screen's background color is still blue.

Could anyone point me in right direction what should I change in order to make that window background color to follow 3rd party theme again?

Examples:

Restart screen

Red-Blue Flash on lock-screen

https://youtu.be/tU47GFvFF1o

Blue Flash on lock-screen

https://youtu.be/xxx2kyod8Kw

Answer 1

Hi,
Firstly, try to boot into Safe Mode.
Turn off your device, then press the power button to turn it back on. As soon as you see that Windows 10 is starting, hold the power button until your device shuts down again. Repeat this process until you enter the Windows Recovery Environment (Windows RE).
When in the Windows Recovery Environment interface, you should see the “Choose an option” page.
Navigate through Troubleshoot → Advanced options → Startup Settings → Restart.
Your device should automatically restart itself. The next time it boots up, you’ll see a list of options. Choose option for Safe Mode.
After that perform a clean boot.
https://support.microsoft.com/en-us/help/929135/how-to-perform-a-clean-boot-in-windows
Uninstall the third party software about change theme. Then reinstall your video card driver from the manufacturer's official website.
Hope this helps and please help to accept as Answer if the response is useful.
Best Regards,
Carl