My 2003 1.8 Nissan Sentra GXE was shorted it out by accident, what can do to start it again?

By accident my torque wrench touched the alternator over the red rubber which covers the alternator nut. I heard a singular crack. After I completed the torque routine, I tried to start it, but it just crank. I noticed the instrument panel (dashboard) was not lit. The car's electrical locking system was not working. I used my beeper but, it was not working. It would close or open the doors. I already checked the ground contacts and clean them, except the one that is no accessible because I will have to remove the entire passenger panel. Can you help, please?
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