Taking out the coin-cell RTC battery resets the system clock, but it will not clear the BIOS password on a G5 generation machine.
: Power off, disconnect all power cables, and remove the battery (if possible). Power Button Hold
Unlike consumer laptops, the HP ZBook 15 G5 stores its BIOS configuration and administrative passwords in a non-volatile, chip-level security module (often tied to the TPM and a dedicated EEPROM chip). hp zbook 15 g5 bios password reset 2021
Format a blank USB flash drive to FAT32.
Press the while holding those keys down for 2-3 seconds. Taking out the coin-cell RTC battery resets the
Navigate to the utility directory (usually C:\Program Files (x86)\HP\BIOS Configuration Utility ).
It’s important to clarify that providing a (especially from 2021 models) isn’t possible for legitimate security reasons. HP uses hardware-level security chips (TPM, Intel PTT) on that generation, and simple backdoor passwords or software resets don’t work. Format a blank USB flash drive to FAT32
On a separate device, visit a verified database like bios-pw.org .
Disassemble the ZBook 15 G5 to expose the motherboard. Look for an 8-pin SPI Flash chip (often Winbond or MXIC brands).
Locate the small coin-cell RTC (Real-Time Clock) battery and unplug its cable.
By following these methods, you should be able to reset the BIOS password on your HP ZBook 15 G5 laptop in 2021.