After several hours of exhausting troubleshooting, smashed fingers and accidental electrocution, it seems the data bus line connecting both Mission Computers was seared by earlier Laser fire, then during a high intensity turn, the exposed center-conductors promptly shorted into each other, blacking out the ship. All wire harnesses are reseated, repaired and all avionics reseated, op checked and the ship is awaiting check flight. Further documentation is in the Maintenance Discrepancy Log