In need of Help
 

I have a 98 Nissan Altima and I accidentally hit the alternator terminal with a screwdriver the car started up after that and now it don't I checked all fuses and they are good, I also changed the fusible links, now the alarm works and lights but nothing else does, what else can I do or check to get the car to start and dash, radio, windows to work. Can someone Help me Please it's my son's car I did this to and now he's mad at me. HELP PLEASE