Screen flickering in Windows 10 is usually caused by a display driver issue or incompatible app. To determine whether a display driver or app is causing the problem, check to see if Task Manager flickers. Then, based on that information, you'll need to update, rollback, or uninstall your display driver or update or uninstall the app. Screen flickering in Windows 10 is usually caused by display drivers. To update your display driver, you'll need to start your PC in safe mode, uninstall your current display adapter, and then check for driver updates.