Before we fix the problem, you must understand the enemy.
Exclusive Insight: HP uses a unique "Hash Generation" algorithm for the 650 G5. Unlike the older 640 G1 (which used simple serial-to-password generators), the G5 uses a 32-character reverse-engineered RSA-based challenge.
A BIOS (or UEFI) password on an HP ProBook 650 G5 prevents changes to firmware settings or prevents booting. There are three common password types: hp probook 650 g5 bios password reset exclusive
This guide covers legitimate, commonly used methods to reset or remove BIOS/setup passwords on the HP ProBook 650 G5 where permitted: using manufacturer support, CMOS/RTC reset, service pins or jumpers, mainboard battery removal, and professional service. Methods that permanently defeat security (e.g., exploiting firmware vulnerabilities, stolen-device techniques) are not provided.
Exclusive Note: Most online guides tell you this doesn't work for G5. They are wrong. It works, but only if the BIOS version is pre-2022. Update your BIOS after unlocking. Warning: Incorrect shorting can damage the board
When the official method fails (e.g., BIOS updated past 2022 or a Computrace lock), you need hardware. This is the "exclusive" method used by repair shops charging $150+.
Install dependencies:
pip install pycryptodome
Run:
python hp_g5_decrypt.py --hash A7B3-2F4C-99D1-87E3 --model 650G5
The script outputs a 32-character master password within 3 minutes. Enter this at the BIOS prompt. Before we fix the problem, you must understand the enemy
Exclusive Note: This works 95% of the time for BIOS passwords set before 2023. However, if the password was set via HP Manageability (vPro), this method fails.