Electrical problem

Had to have a jumpstart out of nowhere today.  Then while
driving home I hit a bump and the radio cut out, then all
sorts of dash lights came on..... brake, theft, check engine.  
The engine never cut out but all electrical was crazy for a
few seconds and suddenly everything was fine.  The radio
station I had listening to even came back on.  Did not seem
to affect any pre-programing.    The rest of the drive went
fine and as I got home and turn the vehicle off I hit the lock
button on the door as I was getting out and noticed a lack
of umph.  Any ideas where I should start?