Disconnect the main battery and the small coin-cell (CMOS) battery. Locate the jumper labeled or PASS on the motherboard.
Check if the keyboard layout is correct (Z and Y are swapped on some layouts). hp zbook 15 g5 bios password reset
When prompted for a password, look for a "SpareKey" option or press . Disconnect the main battery and the small coin-cell
This is the "nuclear option." Replacing the entire system board will provide a fresh BIOS with no password, but it is the most expensive route. Summary Checklist 💡 Quick Tips for Success: Always try common default or "forgotten" passwords first. When prompted for a password, look for a
If you bought the device used, contact the seller for the "Management Password."
Move the jumper cap from its current position to the reset position for 10 seconds. Move it back, reconnect the batteries, and boot up. Method 4: Replacing the BIOS Chip or Motherboard