For me the two to the right were closed.
I removed them and i thought you figured it out since it took longer for it to spin the fans down and it spun them up and down again but then it turned off by itself and wouldn't turn back on until i unplugged the psu and waited for a few seconds.
Yes, the CPU still works just fine in my Gigabyte X58 board.
I am thinking of buying a cheap E5520 or something similar just for troubleshooting.
(the plan is to buy two X5570s but i want to make sure the board works first.)
The RAM you have been using, was it all ECC REG / ECC unbuffered or...
I just recently purchased a board i thought was identical to this one. (583724-001)
but no matter what i do i can not get it to post.
1x Xeon X5670 in CPU Socket 1
4x 2GB HP PC3-10600 ECC Reg RDIMM - 595094-001 in Slot A, B, D & E of CPU1
6x 92mm AVC PWM Fan (both sense...