The tone comes from Microsoft Windows 10, where Cortana and system dialogs used the asterisk alert, historically called the critical stop sound, to warn users about errors and blocked actions. As Windows PCs became the default editing setup for many creators, the chime was ripped and shared on soundboards as a standalone error sound. It stayed popular because it is instantly recognisable even without a dialog box on screen, so editors now use it as shorthand for a computer saying no, glitching out or demanding attention.