Several factors can affect the screen mirroring function on your Samsung TV and phone. These include incompatibility, a poor Wi-Fi connection, an active battery-saver mode, or outdated software.

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.

Apple's discussion boards and the MacFixIt inboxes are filled with a surprisingly high number of reports indicating backlight burnout (though other factors may be at play) on Apple Cinema Displays ...