Toshiba BIOS Most Toshiba laptops and some desktop systems will bypass the BIOS password if the left shift key is held down during boot IBM Aptiva BIOS Press both mouse buttons repeatedly during the boot Using the Motherboard "Clear CMOS" Jumper or Dipswitch settings Many motherboards feature a set of jumpers or dipswitches that will clear the CMOS and wipe all of the custom settings including BIO