acer v3 771g bios problem advanced

[helmiderbali]

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

[Grisu65]

did you try with a bootable USB-stick with somekind of Ubuntu/Mint or Win8pro.
It must be prepared as bootable GPT, otherwise no luck to start with UEFI and secure on.
This should work, at least with mine no prob to install anything (Win7 dont work as there is no CSM support with this bios).