Hi:
If removing the password jumper did not clear the password, then the stringent security setting was enabled by the person who set the BIOS password.
The stringent security setting prevents the jumper from clearing the P/W, and the only option in that situation is to replace the system board.
This information is outlined in the service manual...chapter 8, page 110.
http://h10032.www1.hp.com/ctg/Manual/c04828077
Stringent security is a mode where there is no physical bypass of the password function. If enabled, removing the password jumper will be ignored.
HP will no longer provide support for clearing BIOS passwords...
https://support.hp.com/us-en/document/c06368824
The forum rules were amended on 1 March 2019, which no longer allow us to help with removing passwords.
Rule 4.d...
d. No posts shall include instructions or directions intended to bypass or subvert security measures, including passwords, locking mechanisms, fingerprint scans, etc., or to bypass any safety measures.
https://h30434.www3.hp.com/t5/custom/page/page-id/hp.rulespage
Therefore, this topic is being locked.