If above fails:
This is a hardware-level solution. It involves physically accessing the motherboard to reset the BIOS memory, thereby clearing the password. Vivid E9 Bios Password
Many professional-grade motherboards, like the one inside the Vivid E9, feature a physical jumper designed specifically to clear the BIOS password. This is often faster and more reliable than removing the battery. If above fails: This is a hardware-level solution