Okay I did a Clean Boot and the system booted up fine. Although, I still have this issue where I put in the password and it takes a LONG time to get to the desktop! This happens even in Safe Mode so I know it's not some "service" or "startup program" that's causing it.
When I did a fresh install of the OS (and before I had any issues), once I put in the password, the desktop would appear almost instantaneously after the famous "beep".
The other thing I am having trouble with was that the audio devices were getting switched automatically. I have 2.1 speaker system connected by an Optical output from the motherboard to an A/V Receiver (S/PDIF output) and I also have my headphones plugged in to their respective jacks (green and pink) on the back of the motherboard. When I use the headphones, I always right-click the speaker icon in the Taskbar and select "Speakers" and press "Set as Default" and it would switch to those. When I wanted the speakers, I would click the "S/PDIF" and click "Set as Default" and it would switch back. Now, when I try to set the output to the S/PDIF, it keeps automatically switching to the "Speakers"; in other words, I don't get any sound from the 2.1 system; only the headphones.
I then went to the ASUS website and downloaded their "AUDIO" drivers for the motherboard and installed them. That installed some 3rd party program called SoundMAX. Now the S/PDIF works fine but I've NEVER had to install anything else to do this before. I always had the "High Definition Audio Device" in the Device Manager and just used that (since I'm using on-board sound and no sound card).
Besides, I also turned on Driver Verifier now and there are NO BSODs! I even played a game (Sniper Elite V2) for about an hour and it didn't even hiccup once! I played it at max settings so I think that pretty much rules out any driver conflict right?
So right now, I'm running 3-Way SLI where the 3rd, 5th, and 7th PCI-E slots (PCI-E 2.0 x16) are occupied. The moment I install the 4th card and populate the 1st PCI-E slot, the system causes all sorts of problems. However, I tested that slot by itself (with 1 card in the system) and there are no issues at all!
I've pretty much narrowed it down to this:
If I install GPUs in the 1st and 3rd slots (either SLI or 3-way SLI), the system crashes, freezes, and is not working properly.
If I use any of the 4 PCI-E 2.0 x16 slots (1, 3, 5, 7) individually, there are no issues. Even if I use slot 1 and 5 for SLI, there are no issues. If I use slot 3 and 5 for SLI, there are no issues. :sarc:
So, it seems like ONLY when I use BOTH slot 1 and 3 together, the problem(s) arise(s). What could this mean? If the slots individually work, why are they having issues when I populate them together? :shock: