hi there!
i have same but different problem. i am just update bios for my hp compaq 6200 pro 2.2?? to 2.32 and after that just install windows 10 64bit. i am just facing the problemzzzzz i think
pc restart to slow
when power on pc doesn't hp logo or bios menu and just start windows after mint or more and some time just power on and no display no beep after few mint pc turn off
then i download bios v2.21 and v2.28 after installing these there is no result of bios downgrading
plzzz hlp me
sorry for my bad english
thanks in advance