[quotemsg=10275561,173,380315]Great info! It didn't directly address my problem, but it did get me looking in the right direction.
For item #2 - My PSU (Dioblotek DA500) came with an 6/8 pin connector, MB (Gigabyte MA785GT-UD3H) had a 8 pin CPU 12 V connector, seemed simple, but no boot.
Disconnected everything, checked PSU, even pulled out CPU, bent pins in the process.

(Still worried if I should take it apart to put in new thermal grease). Put it all back together and went to bed.
Next day after work, looked around on the net, and found this thread, looked at the MB manual for the 10th time, then the PSU manual, looked at some yellow and black wires really closely and had the a-hah moment and plugged in the 4-pin connector to the 8 pin plug. Hit the power button and all works fine.
Don't know if this is that common, but it might help someone.[/quotemsg]
If you look carefully and compare the 4/8 pin CPU power plug with the 6+2 PCI power plug, you will notice that they are wired differently. Plugging either into the wrong plug (and you shouldn't be able to do that) will short the 12 volt PSU output to ground. If the PSU works properly, there's no problem. The PSU should detect the overcurrent condition and electronically shut itself down before it fries itself or the motherboard.
shortstuff, great job with the pictures.
