HP Power supply keeps failing

I would advise buying a power supply from a reputable power supply vendor such as Corsair, Seasonic or PC Power & Cooling (technically all the same anyway).

However, it could also be the power source the PSU is drawing from. Are you using a power strip with a surge protector on it?
 
I bought the power supply directly from HP and yes I have a surge protector on the computer. Could a bad voltage regulator on the motherboard cause a power supply to go bad?