What causes this model of vacuum cleaner to stop in the middle of the job? Is overheating an issue? Can this be fixed? If so, how?

Our Hoover T Series / 12 AMD was purchased less than a year ago and has been fuctioning well until today. It simply stopped in middle of vacuuming a small carpeted area. We thought it might have to do with apartment's electrical outlet, but apparently not. We'd emptied the container of dirt and checked to maje sure no obstruction was in the rollers -- replugged and it just would not turn on. I'm hoping that it just needs to cool off fior a while. Please advise if you've experienced what I described and how you remedied it. I'd paid over $150.00 for this vacuum cleaner and am hoping it's not altogether dead and gone. Thanks for your help!