Thanks for the response guys - i've actually been on here before and thought i had remedied the problem. Everything seemed to be smooth sailing once i swapped out my Corsair RAM for G Skill RAM. I had also remounted the heatsink as well to make sure it was secure - not overtightened, not undertightened.
After about 3 weeks of no issues, i had gone away for a long weekend, came back and turned my system on and the old girl threw up the "00" code again. I was pretty surprised, everything seemed to be going so well!
So to answer the first question, system specs...
i5 6600K w/ an H60 for cooling
Maximus GENE VIII
G Skill RAM F4-3000C15Q-16GRR (4x4GB)
PNY 480GB SSD
GTX 980 Ti FTW
Seasonic X 850W
Asus AC56 Wi-fi
Running Win 10 home
All within an Air 240 case
Fans etc etc
So, thought i had all the compatibility things ironed out. And then this happened, so i went back to the drawing board. I had seen people say they disabled surge protection and even the SVID control in BIOS and that helped them with stability. So i went ahead and disabled surge protection, system starts fine, no issues. Then i went to disable SVID, and the system would not boot past the splash screen...
So that's how i came to the voltage question. With SVID disabled, i get to the splash screen where you can hit F2 to enter bios, then that disappears and goes to the screen where the 5 or 6 little white balls circle around as the system loads, and it's at that point it locks up. No blue screens or anything, just a complete freeze.
When i turn SVID back on, no problems, it boots up fine. So i'm wondering if there's some complication with the voltage regulation, DIGI, or something. As i understand it, this function communicates the input voltage to the CPU, so wondering if there's some instability there.
It does seem odd that when this is disabled it locks up during boot, no?