I have a 1999 HOnda accord and all the electrical are not working. My stereo, light, speed meter, wiindows, everything that is ellectrical have stopped working. Any idea what the problem could be?

. Test all under dash and underhood fuses with a test light or multimeter.

. Remove and fully charge the battery--replace, if necessary.

Well I was driving for about 2 hour and my batterie exploded and smoke started to come out of everywhere I replaced it and I noticed that batterie acid started to come out from the new one

Test the alternator, which most auto parts stores will do for free. Go over all cable connections.