so my Mac Pro was left somewhere in the house with some DIY done above it.. i was unfortunately not there when it was being done and the other member of the family obviously didn't care/think that anything could get damaged. so.. my Mac Pro was on (idle) during all that time. Some of the dust/powder from the drilling in the wall definitely was inhaled by the fans at the front, i wiped my finger on the area in front of the upper fan inside and there was a faint white smudge from what you'd expect from drilling dust/powder from a plaster wall. has this guaranteed to have ruined my components inside? I've kept it turned off completely and disconnected all peripherals. I don't intend to turn it back on until next week when i get the electric duster / DataVacc 500. i really hope I've not ruined it. I intend to sell in a year, but if it starts showing signs of issues, then that relative is going to pay for it.