Sounds like bad fuses, or the entire fuse block has gone bad on you since nothing at all works. Under your hood on the driver's side about half way up (right against the fender) should be your fuse blocks (black boxes about 6" long and 3" wide using my maxima as a reference). If either of them look to have gotten hot, melted, or been damaged in any way tow you car to the dealership and have them replace the entire block of fuses since something is shorting and putting new fuses in a bad box is a waste of good fuses. Failing that, the main fuses should be smaller 1"x1" black boxes, should be 2 or 3 of them, replace those and any other fuses that look blown and you should be alright.