I was driving a couple of days ago and it seems the power was just cut, the headlights and internal lights went out, the engine stopped, and the Blazer wont start. The starter trys to get it to go but it wont. The headlights, the gauge cluster, and the roof lights don't work at all! Please help!!! I don't have any money and need to get this fixed ASAP!

It's a fuel injected V8, it has plenty of gas, and the battery is fine.

Are the battery cables good?

As far as I can tell they are, The connection is solid and the ground is good, they look clean. The air has power, and the starter, just not the headlights, interior lights, and it shut down while driving, and wont start.

Sounds like you either fried the wires off the starter or the came off somehow . You are going to have to start at the starter .

Mine did a similiar thing when the (i think) fuel pump relay on the back of the engine compartment on the firewall would mess up after it got hot. Seemed like i lost power to everything.

Have you jump started it recently?