I use a SSD 520 series with a MB DQ77MK .
When I set a Hard Disk Drive password in the bios (0056), the status stay "not installed". I make the same with User password and I get "installed".
I buy a platform Vpro only for this. Does I miss something ?
I was able to set a HDD password on my system, but it only works if you go into BIOS immediately after a cold boot. Trying to set the password after a Restart from Windows does not work. Trying to set the password after a Shutdown from Windows does work.
I will report this behavior to our BIOS team.
Let me know if you continue to have problems.