A software glitch where an error message freezes. When dragged across the screen, it leaves a continuous, cascading trail of duplicated windows, effectively "scratching" or painting over the desktop.

The phenomenon often involved a coupled with a repeated, stuttering audio loop—the "scratch"—and a visual effect known as "window cascade" or "painting errors."

The next time you see a "Windows XP Error Screen" meme, listen closely. If the creator knows their history, they won't just show the blue screen. They will add a low, humming buzz in the background.

This is your most powerful tool for fixing a non-booting system. You will need your original Windows XP installation CD.