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Hello, how are you?
Welcome to the Microsoft community!
My name is Paloma B., I'm an independent advisor, I'm here to help you in the best possible way.
Analyzing the information presented, I recommend that you follow the guidelines below, please, to try to solve this problem.
First, I recommend downloading and running the tool on the link below, please, for a system check and update:
https://go.microsoft.com/fwlink/?LinkID=799445
Verify that the problem is resolved.
If it persists, based on your equipment model, go to the manufacturer's website and download compatible and updated drivers, and reinstall them. Follow the guidelines on the link below, please.
https://support.microsoft.com/en-us/help/402844...
Verify that the problem is resolved.
If the problem persists, please follow the next guidelines.
Important: at the end of each method, check if the problem has been solved. If it persists, proceed to the next one.
I'm really sorry to hear about this problem.
This can happen for several factors, such as drivers or even the video signal cable.
I suggest that you first update your windows to the latest version, and after that check the manufacturer's website, the video driver to update it to the latest version.
Also please test with a different cable if the same problem occurs, there may be a fault in the cable, it is not able to transmit the correct color in the new resolution you are trying to change.
I await news.
If these procedures helped you in any way, please click on "I solved my problem" and also mark as an answer, so you can help others users.
We will always be available for whatever you need!