Nothing works except fan After Update the Wrong Bios

Hello,
I need a help for my bios .
I updated wrong bios .
it was FOXCONN A76ML-K but I updated A76ML-K 3.0
after reboot nothing works on my pc except fan..
screen doesn't show up and my usb keyboard is not working.
I tried so many things like take out battery and clear CMOS and all other stuff like tried to recover from cd,dvd,usb,floppy.. nothing is working..
Do I need to change the bios chip?
Do you think If I plug ps/2 keyboard is it gonna work ?
My computer model is Exper but totally custom computer.