: Turn on the laptop and intentionally enter the wrong password three times.
If you are the original owner, this is the safest and most reliable method. HP has a support policy for forgotten BIOS passwords, but they have become stricter since 2018 due to theft concerns. hp probook 650 g2 bios password reset
Opening your laptop voids warranties (though your G2 is likely out of warranty). Static electricity can fry components. Proceed at your own risk. : Turn on the laptop and intentionally enter
[a long numeric code]
This is a quirky but well-documented trick for older HP business laptops, including the 650 G2. including the 650 G2.