I've taken the machine to base config on 3 different motherboards, all 3 have the exact same error "E1231 1.2V HTCORE PwrGd and E123B Vldt PwrGd"
This post said it was the motherboard but I highly doubt 3 boards have the exact same error unless this is a very common error. I've tried move around and switching the power supplies, using one of the two proc's I have (2 opterons) and I have 32GB of Ram (8x4GB) and have switched them out and used KNOWN good RAM.
I'm at a loss, I called support but they wanted to charge 300 dollars for a one time TROUBLESHOOT...Any help will be MUCH appreciated.