Check all around your hood for an aftermarket switch. It'll probably be like a button that gets pushed only once the hood is closed. Sounds like someone put an alarm/security system on the car that's tied to the hood, and it's on the fritz. 

Hey everyone. I'm posting to see if anyone else has dealt with this issue. 

Twice in the last hour, I have unlocked my car with my FOB, and when I try to start the car, no power. 
No radio, no dashboard, no dome lights,  no headlights, no clicks, nothing. 

Battery is at 12.6, accessories connected straight to the battery turn on and off. 
Battery terminals clean and tight. 

After I open and slam the hood, the car reacts normally again. 

Really weird electrical issue. 2005 Civic EX