I didn't brick them. I was thinking replacing bios from USB would be more effective. I am not sure if it's necessary. I just don't know what to do as after flashing bios hashing dropped to 12Mh and then after loading the backup rom it remained at 12Mh. Everytime I reboot my computer my core and memory clock are on the lowest setting and I have to reset them in afterburn before mining. So I didn't really brick them but I am looking for a way to get them to the 'out of the box' state that would work for me.