96 dord explore won't start?

My 96 ford explore is making a click noise when i turn the key, the lights and radio turn on but the car won't start. I tryed jumping it with the jump start it was fully charged but when i jumped the car the jump start went dead. What can it be

Go to youtube and put in " How to replace a starter solenoid on a 1996 Ford Explorer " Sounds to me that it is bad. Fords are so easy to work on and always start with simplest and cheapest way to fix the problem.

Loose battery cable… To the starter… Dirty battery post

SHORT IN BATTERY OR ALTERNATOR TAKE THEM OF AND GO TO AUTO PART HOUSE AND LET THEM CHECK THEM. NOW ON REMOVING THE CABLES MAKE SURE THEY ARE CLEAN