I appreciate all of the responses, and I will get back to you today with all of my specs.
A few things I can answer off the top of my head.
Originally I had a 4gbx2 RAM set up and ran multiple tests running each stick at a time and in the different entry slots of the mother board (the specs of the motherboard I don't know off the top of my head, I'll have to double check)
I found one stick to be causing nearly all of the crashes. And was perfectly happy running on just one stick at 4gb for a while. I recently bought a second monitor and have been doing simple multitasking (LoL, Netflix, Chrome) and this was finally starting to try on my mere 4gb. I hadn't ran my PC with both RAM sticks a long while, and decided to throw the stick I originally deemed DOA back in and see if I could run smoother with 8gb, to which my PC almost immediately crashed after not crashing for nearly 6 months. I even ran into some crashing problems again after removing the DOA stick. I wanted to upgrade my RAM, and opted for a 16gb upgrade.
Recently I purchased Battlefield, and as you mentioned, was seeing massive spikes in my CPU usage around 100%. And caused my CPU's overall performance to plummit out of no where. I did some minor trouble shooting, defragmenting etc., and did not see much improvement.
I don't particularly know why, but the 100% CPU usage problem has stopped happening, it sits comfortably below 20% most of the time now. However Battlefield still crashes my PC anywhere between 5 - 30 mins of play.