HP's power supplies are utter dreck. Every HP I've ever owned, and there have been plenty, has died in a year, in every case from a fried power supply. When my wife's went out, I did a little investigating and found that HP was running the power supply at better than 90% capacity. That's brain damaged. If it runs at that load on a regular basis, it is guaranteed to have a short and miserable life.
You won't fool me again, HP. You're like Apple. The surface looks good but the guts are dystopic.