On Fri, Mar 8, 2013 at 10:51 AM, Gerry Reno <greno at verizon.net> wrote: > > Nearly every time we've had lockup problems it has come down to bad or failing memory. > > I've even had memory cause problems where it would pass a quick memtest but ultimately would fail if you left it running > the tests overnight. Thank you for your reply. I was leaning towards memory after swapping the power supply did not solve the problem. There are 4 8GB DDR3 sticks, so I took out two and ran with 16G. It still failed. I then swapped that out for the other 16GB. Still failed. What I haven't tried is to downclock the memory to a slower speed but will try that tonight if the BIOS supports it.