I had 2 Dell Optiplexs 3070 having a problem with no display and amber light blinking , After a long search I found a bin file from dr.bios and one of them is ok and working fine, the other one is not working with amber light blinking ( a continuous 2 times blinking followed by a pause ) , after that I have 3 motherboard with the same error even after reprogramming all are the same problem , I am worried without solution . I need your help please