Having problems trying to install Windows server 2012 R2 OEM Reseller Option Kit (ROK) on your HP Proliant ML 10 Gen 9 server? Me too! Brand new server, new install using the ROK software supplied, boot from the DVD then a few screens later I would get the following “Failed BIOS Lock” error message.
Luckily I found the following article on the HP enterprise support site that confirmed it was an issue with the installation media not the server.
http://h20564.www2.hpe.com/hpsc/doc/public/display?docId=emr_na-c05136138
If your installation media matches one of the many listed then the solution is to fill out some forms and they’ll send you some new DVD’s.