So I just picked up a MSI 790FX-GD70, Phenom II x6 1055T, and Corsair DDR3 1600 (cmx4gx3m2a1600c7).
I've tried with two video cards, the first card stops at D5 on LED POST lights and the second cycles through FF, D3, D5.
I can't find much help other than start replacing either the memory or motherboard. Does anyone have any idea of what is wrong and my what my next step should be.
One thought I had was that the CPU might not be supported by the current BIOS on the mobo cause it looks like MSI added support for the 6 cores in BIOS 1B, however cause I can't POST I don't know what the mobo currently has or any idea how to update the BIOS w/o it posting.
I've solved my problem. It turns out the motherboard had version 1.3 of the BIOS. This version doesn't support the AMD x6 T1055 CPU. Went to my computer store (FRYS) and picked up a x4 925 (support by the initial release v1.0, cause I didn't know my board had v1.3 at the time) and the system booted up fine.
Updated the BIOS and my T1055 worked just fine. One other thing to note is that by default this board doesn't support 1600Mhz memory by default. You can change it to run at this speed by changing the timing with Z-Memory and setting it to 1:4.
I looked at the matrix of supported CPU's from MSI web page and the wrote them all down. Went to the store and picked up the cheapest one as I was just going to return it it didn't really matter but I'm cheep.