I, Stand Corrected.... yeah guess I needed to Rant and Voila' after countless hours days found a youtube showing a complete disassembly, including removal of motherboard and there it is, ML 1220 -M3(HLF) 0414.11 Piece Of Caca. anyway this battery is a Maxwell 3V Rechargeable battery. they could've made it where you don't have to take out the motherboard. if you cut a hole between where the first usb finishes and third usb starts, that's where cmos is at. I don't recommend it. At Your Own Risk, cut with a dremel tool, but don't go thru. you can finish with other sharp object scratching your way thru.
I am Master Jeweler / Goldsmith and my jewelers tools come in handy, can be done the scratching method. Anyway, will see if removing the cmos took care of the ending loop. I will keep you posted.