4 ms·

TLDR; remove battery.

• NullPrefix 7y ago
  This is about laptops, not desktops. Battery removal only resets the clock, but the password stays on.
  • numpad0 7y ago
    Doesn’t matter if it’s laptop or desktop, depends more on how old PC is. I think UEFI machines use NAND or NOR ROM as actually nonvolatile NVRAM.
• jotm 7y ago
  Sadly (or fortunately?) that stopped working around 2006