What do you mean the signature of HP notebook parents does not match?
Signature information does not match. The signature mismatch of HP notebook parents is caused by the signature information mismatch or unsigned. You can take the computer to the HP after-sales service center to reinstall the operating system. Hewlett-Packard (HP for short) is one of the information technology (IT) companies, founded in 1939. HP is headquartered in Palo Alto, California, USA.