Diagnose Your Dead Outlets and Lights
The Start of the Yes/No Diagnostic Pages
When outlets and lights in your home are not working, this is often due to a poor wire connection somewhere on the circuit. It is called an "open." But to be sure whether your problem is an open, and to find where a loose wire may need repair, you can look over the Diagnostic flowchart. Or if you are more of a step-by-step person, you can just answer the following yes/no questions.
START HERE. Does a test lamp [portable, turned-on, works in a good outlet] work in all outlets in/on the house when all wall switches are on (note which outlets are dead)?