If you have outlets with no power and no breakers have popped:
Check for GFCI outlets which may be in the circuit. If you have a GFCI wired up with receptacles down stream of it, they may not have any power if the GFCI has tripped. If resetting the GFCI doesn't help, take the cover off, ease the GFCI out and check for incoming power at the wire terminals. If you have power coming into the GFCI but it doesn't work, replace the GFCI. (Oh...and make sure you wire the new one up correctly per the paperwork that comes with the new GFCI. Don't assume the existing one is wired correctly.)
Make sure you have no light switches powering those receptacles. If you do, flip them and see if you get power back.
You may have a loose lead at an upstream receptacle (closer to the breaker). If so, then none of the receptacles down stream will have any power. Check them all in the circuit...loose connections are a fire hazard.
Your receptacles may be bad. It happens.
You may have a bad breaker.