Manuals and User Guides for HP Pavilion Elite m9400 - Desktop PC. We have 10 HP Pavilion Elite m9400 - Desktop PC manuals available for free PDF download: Getting Started, Maintenance Manual, Limited Warranty, Guida Alla Risoluzione Dei Problemi E Alla Manutenzione Manual, Reference Manual, Manual, Disassembly Instructions Manual, Install Manual, Quick Start