yes i had the same problem with unlocked menu too.
i was only able to save trough --> "save and discard", "exit without saving".
by for example edditing "VT" and quit with --> "save and exit" - my notebook went to black.
--> only CSMOS rest fixt it. (took out the CSMOS Battery)
but "100%_HP_DV6_6XXX_sp54024_NWL_ByCamiloml" only with removed Whitelists works perfect.