Causes of a Computer Screen That Turns Black and White. A computer screen switching from colors to black and white is usually the result of activating an accessibility setting or color filter option.

If your Windows computer screen goes black & white when HDMI is plugged in, reinstall the display driver, perform calibration, reset control panel settings, etc.

If you see Black and White squares on your computer screen, the problem may be with your display, GPU driver, or GPU. Use these fixes to resolve the issue.