@MotherFo / Totally Dubbed - I am in the middle of another Win7x64 re-installation.
Here's an update on my problems:
I am still seeing random system hangs when initially booting up my PC, and the CPU light is on when this happens.
I did do a manual configuration of my DRAM timings/voltages instead of using the built-in XMP profile. I didn't see any benefit from this. The hangs before entering BIOS were still about half the time, or worse.
However, it seems like the boot hangs are less frequent now after I modified (lowered) some of my DRAM voltages. One question:
Should I be trying to set my DRAM voltages based off of the configuration values, or the real-time monitored values that are being shown in the BIOS?
On the plus side, I was able to get the other 4-pin Molex connector installed on my 8-pin eATX motherboard connector, so I have eliminated that from being an issue. All it took was a few solid slams with a hammer to get the wrongly keyed pins to fit.
... Although the Molex connector pins were keyed differently coming from my supply, they still fit on my motherboard with the proper yellow/black wires going to the proper pins)
After adjusting my DRAM voltages, my system will hang before the BIOS status screen less than 20% of the time now.Question:
Are there any specific voltage settings I should be making in my BIOS to get more stable?
Also, the reinstallation of Win7x64 still acts a little odd occasionally. When booting up Windows (around 10% of the time), the Windows start-up screen will hang for about a minute or two prior to showing the glowing Windows logo. Normally, my system is fully booted in less than 20 seconds off of my SSD drive (I currently have a pretty bare-bones installation).