Here are two videos of the noise on separate occasions:
Don't ya hate when that happens ? I've had that happen to me more times than I could count. The noise or problem totally goes away when you take it to a mechanic. You must have luck like me. None. If anything has to be left to luck, I'm screwedIt's just my luck that it wont do it that time, but it has been doing it every other time I have turned the car on for the past few weeks.