To get rid of a crosshair that's stuck on your PC screen, check your monitor's On-screen Display settings, disable Crosshair Bloom in game settings, etc.

If part of your computer monitor’s screen is not refreshing properly and shows old content, when you refresh the screen, see this post.

New references in an in-development version of Windows 11 mention a 'full screen' gaming experience that you can boot into, perfect for handhelds.

A handy tool for presentations, demos and even accessibility, ZoomIt lets you zoom in on the screen, mark up the current page, and even capture your screen activity.