Specs: 2010 Mac Pro 3.46GHz, 24GB RAM, GTX680, Sonnet Pro PCIE with 2TB RAID 0 SSD, and RAID 10 6TB on 5,1 3 weeks ago I left the computer running overnight as I usually do and came back to it completely bricked. No lights, no nuthin! So, I went through the manual's steps and went through the steps to the point where I bought a new (used) PSU. PSU arrived, put it all back together and the machine fired-up like normal. The first few nights I shut the machine down. And then went back to my normal procedure of letting it stay on overnight. Next morning it was bricked again. What could be causing this? As far as power from the wall goes: it has a clean shot straight to the breakers on a 20 AMP fuse with roughly a 30 foot run. This machine lived on this run for a good 6 months. Off the outlet is a Cyberpower 1350 UPS that only has a single surge off of it for the sole purpose of having the Mac be the trigger to turn the peripherals on/off. And that setup has been with this mac for a good year and a half. Thanks in advance for any help.