Asrock N68PV-GS No Display Problem solve

I have an Asrock N68PV-GS No display no beep but the fan is running. I thought it would no be fix anymore because I search a solution in the web i google a lot and all comment said its hopeless. Then I  meet computer technician name Delgadorem he told me he can fix  any mother board but first i dont believe it I thought his knowledge is just like mine that i will just look for bloated capacitor and if will not work then i judge it hopeless.  I bring my two Asrock N68PV-GS to him because I have two main-board with same problem. after a week  called him hi said he had not touch it yet. And so i doubt that hi cant do it. after 2 weeks I call him he said that its a little bit hard. and then after 3 weeks I conclude finally that he cant really do it. I went to his shop to get my main board as for souvener porpuse or maybe I think I may need it in some porpuse  but then when we met Im surprise he already done it it works the two mainboard works. he said he just copy the bios program from the other board I dont know how he did it because the two mainboard wont bot anymore.