A friend with a multi meter and familiar with electrical. Said that usually it will read high when testing but once in use it will drop down to 5v once it starts to regulate. I had a second person tell me the same thing.
So when I hold down option or put in a cart it does seem the screen changes underneath all that noise. If the dram was fried wouldn't it just be constant? This is why my initial guess was video. Just trying to figure out my next steps...replace the power supply or look for DRAM if that is an option..or ?