You probably have a virus. A file is a file, a registry component is an entirely different thing altogether.\n\nOpen up My computer.\nGo to Tools Menu > Folder Options\nClick the view tab\nSelect "Show hidden files and folders"\nDeselect "hide protected operating system files"\nClick OK\n\nNow to go C:&#92;windows&#92;fonts and find that file and delete it if you want, but you probably don't have a font called "B..." so what you really need to do is get an antivirus program and scan your system.