The answer to 'my electrical wiring won't turn on' is that there are several common causes, such as a tripped circuit breaker, a faulty switch or outlet, or a problem with the wiring itself. Symptoms can include no power to the affected area, flickering lights, or sparks or burning smells. Solutions may involve resetting the breaker, replacing a switch or outlet, or identifying and repairing damaged wiring.
It's important to determine the root cause before attempting any repairs. If you're not comfortable working with electrical systems, it's best to call a licensed electrician to diagnose and fix the issue safely. Trying to DIY electrical work can be dangerous if you don't have the proper knowledge and experience.