Which of those would you like?
HP's official stance is that they reset lost or forgotten BIOS passwords on business PCs like the ZBook 15 G5. hp zbook 15 g5 bios password reset
Note: HP has recently tightened restrictions on this service for older out-of-warranty models, but it remains the safest official method. Method 3: BIOS Password Reset Jumpers Which of those would you like
Disconnect the main battery and the small coin-cell (CMOS) battery. Locate the jumper labeled or PASS on the motherboard. hp zbook 15 g5 bios password reset