2000 Ford ranger won't start, but still has power?

It has a brand new battery, battery cables, ignition switch, starter, and starter relay. Yet when I get in it has power enough that everything comes on, but if I turn the key once, the entire truck goes dead. I can reset the battery, and the process will begin again. I don't have anymore ideas.

What is… RE-SET. The battery? Battery cables clean and tight? Starter hook -p cable tight?

A new battery can be no good,… Get it checked

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