I went to start my car, turned the key, the.

I went to start my car, turned the key, the dash lights came on for a split second, then everything went dead. I rotated the ignition a few times, no power coming on at all. I grabbed my voltmeter to check the battery, shows 12.5 volts. I replaced the connectors for the battery 6 months ago. I check every fuse, none of them are popped. I got my extra set of keys and tried them, same thing. I don't know where to check next.