1997 S500 dead need help

Hello guys, I'm new to the forum. I have a 1997 S500. I just baought it. It was running fine, I parked in my garage turn ignition off. A few minutes later went to get in the car, turned the ignition, there was a clicking noise and the car went totally dead, everything. What do I do now? Is this a sign of a battery problem or the computer went? Any advise anyone:frown:

Check your battery connections, sounds like one is loose.

:smokin:
I agree with Talonlover: Check your batery cable (Oxidation in the negative pole) and check if your batery has a dead element.
Does yours batery light dashboard is coming on?
Good luck!
Malachias (Brasil)