You're in the right place. I'm sure someone can move this thread if need be, but this will do for now.
Check the power wiring in the engine bay. Make sure all the bolts are tight and that the wiring isn't corroded.
Also, check the fuses and the relays. There should be a fuel pump relay that might have blown. I believe the A/C compressor relay is the same so you should be able to swap them just to test.
More information would always be good. We'll help you figure this out.