One thing is certain, whatever it is you can be assured that this is why it will not now boot.
http://en.wikipedia....ount_technology
It COULD BE, that if this is a component from the motherboard, that as it is a refurbished board, that one of these components has been faulty and has been replaced, but not soldered in correctly, but PLEASE REMEMBER that we are working blind so to speak, and it does NOT mean that this is the cause.
Indeed, it is NOT certain that it is even from the motherboard.
If you can get a photograph and then download that from the camera to the computer and then attach it as an image, not as a file that I have to open, maybe we will have more accurate advice to offer.