The ProBook’s guts lay exposed: a dark green motherboard studded with tiny silver capacitors, ribbon cables like spiderwebs, and there—right next to the CMOS battery—a small, eight-legged chip. The . The BIOS storage.

This method requires disassembling the laptop. Opening the case will likely void any existing warranty. Proceed at your own risk.

The HP ProBook 430 G5 sat on the workbench like a closed coffin. Its silver lid was cool to the touch, its LED power light breathing a slow, accusing amber.

Disconnect the programmer, remove the clip, reconnect the CMOS battery, and fit the main battery. Power on. The password prompt should be gone.

: Navigate to the "Exit" or "File" tab and select Restore Defaults or Load Setup Defaults .