The current security setting for Process Hacker does not permit this action, or ZoneAlarm Pro is asking you whether to allow this behavior. Your computer is safe.
Process Hacker has attempted to load a driver. If you trust this program and know what it is, then you may wish to give it permission and/or elevate the Trust Level for this program.
Process Hacker may be malicious. It may be attempting to affect other programs or the security of the system. Programs do not normally need to load a driver.