Hi,
Please try Intel Management Engine Interface (MEI) Driver
http://ftp.hp.com/pub/softpaq/sp64001-64500/sp64344.exe
and Intel Chipset Installation Utility and Driver:
http://ftp.hp.com/pub/softpaq/sp64001-64500/sp64343.exe
Reboot and try Intel USB 3.0 Host Controller Driver
http://ftp.hp.com/pub/softpaq/sp64501-65000/sp64706.exe
Regards.