acer v3 771g bios problem advanced

Hello ,
i forgot my password for bios , i have two main problems :
-bios is not recognizing boot device and show message " No Bootble device , Hit any key"
-my bios is protected by password wich i can't remember, i tried cmos jumber but it's not working and still demanding password
-other method including utilies will not work because bios is not recognizing any bootable device (hdd, flash...)

- it think this bios update is related to the issue because i used it
BIOS - UEFI for Windows 8 (Not for Upgrades) 2.21 3.0 MB 2013/05/13

-Boot manager is empty list !!!
-tried removing cmos battery and then using cmos jumper but nothing (i gess it's not an erasble bios or somthing)
-somthing to do with secure boot UEFI from my researches

-cmos jumper is not working ?? what should i do because without access to bios i will never know what is the problem
-is there any kind of master passwords or somthing that can help

update :
-used methods on service manual for clearing cmos using jrst2001 but no luck . am i missing something ? aren't these method supposed to clear cmos ? i am really confused , my laptop is useless , can someone provide me a solution

Please help my i lost hope, i tried evreything i can , what should i do