Hi,
Open windows Control Panel, open Programs and Features, right click the entry for HP 3D DriveGuard and select Uninstall.
When this has completed, restart the notebook.
When windows has reloaded, download and install the version of HP 3D DriveGuard on the following link.
http://ftp.hp.com/pub/softpaq/sp78001-78500/sp78033.exe
Regards,
DP-K