I've got a printer that is printing pages before the OS loads. For example, I went into the BIOS and checked the settings. After exiting the BIOS the printer began printing 4 pages with 8 instances of the main screen of the BIOS followed by about 13 blank pages. Just turning the computer on it will print the OS options loading screen or the startup options screen.
I've uninstalled the printer/driver. I've got two HP Laserjet 1100's so I swaped out one for the other and the problem still occurs.
Desktop: HP Pavilion A1210N, Windows XP Pro
Printer: HP Laserjet 1100