Repairing the particular hardware is not seen much I expect inspite of repacing it so ,I had came up with a simple idea of assuming with the damaged motherboard caused by electric circuit ... Hope every one deal with it ?

Repairing a PC board, especially something as complex as a computer motherboard, that has been damaged by an electrical short circuit, is neither simple nor easy. In most cases, special equipment will be needed to determine the actual scope of the damage, and then there is the problem of replacing all the damaged components. If the short also damage the board itself, then complete replacement may be the only solution. In such cases I usually recommend that you either send it back to the manufacturer for repair, or a repair depot certified by the manufacturer.