Mostly, the following are the major reasons for the Windows 10 black and white screen problem. In this, the vibrant and colored display turns grayscale (black and white) and even a system restart doesn't fix it. If you have got the Windows 10 display black and white, then you need to start by understanding the issue. Part 1: What Causes the Windows 10 Black and White Screen?
Part 1: What Causes the Windows 10 Black and White Screen?.