If toilets, sinks, or floor drains become slow to drain an accordion style plunger is highly recommended... don't waste money and time on the cheaper plungers!
If there is a constant noise from the toilet it could be a failed seal at the toilet flapper.
Click here for youtube videos how to change a toilet flapper
If the power stops working on an appliance, outlet, or light it might be that a breaker has tripped. make sure whatever has stopped working is in the off position. Find the breaker that has tripped and reset the breaker.