OK, I have a new PSU I am trying to get to work. It's a Thermaltake 1200W W0133RU. Actually, this is an RMA replacement for another PSU (same model) that had problems powering up after BIOS changes and cold boots. That problem was, after powering on the unit and running it, if I cold booted it immediately afterwards (or did a BIOS change that required a cold reboot), the unit would briefly flash the power light then not start. After receiving the replacement and installing it, I tested to see if the problem I was having with the original unit was fixed.
Since this is the second PSU with the same issue, I was wondering if there is something else you could suggest. I am running the following setup:
Thermaltake 1200W W0133RU
Intel QX9650
Asus Maximus Formula
2 x 2GB G.Skill PC2-1000
HIS Radeon 3870X2
BFG PhysX card
4 x 250GB Seagate 7200.10 drives in Raid 0/5
Plus fans, optical drives, etc.
All of the connectors are firmly seated into their corresponding locations. I tried using the 8-pin motherboard connector on the PSU as well the 4+4pin. I am using two red connectors for the VGA card (one 6-pin and one 8-pin), once SATA cable for 4 drives and one Molex cable for the opticals, PhysX, fan controller and floppy. I tried the VGA power cables in the red sockets (12V rail #3) and the blue sockets (12V #4).
Any suggestions would be welcome.