It sounds like you overloaded a circuit and tripped the breaker. Depending on if you are plugged into a regular circuit or a GFIC, do the following: Regular: Unplug the extra appliances on that circuit and then reset the breaker. In older houses instead of a breaker switch you will find a fuse that has to be replaced. GFIC: If you plugged the straightner into a GFIC (ground fault interrupter circuit) outlet, you will have to reset that at the outlet instead of at the breaker box. There will be a small button on the front of the outlet marked "reset". Press that and the outlets will work again. If your straightener has a short in it and and causes the same problem again, stop using it and replace it.