johnnydoom When I hear of people having this same problem, I tell them to disconnect the battery terminals and put the jumpers on the ends. If vehicle starts, you know it's not the starter or other things. Plus, when you do this, you have just done what you did, make the connection of terminals-battery better. 99/100 times, it starts right up after reattaching.
And if that battery is actually dead, check the date, and check the alternator.
