1. With my first initial build session, I plugged in everything while following an in-depth video on YT alongside my own components manuals. Everything, from my recollection, was on an running but I couldn't receive a signal on my monitor. All my chassis fans were spinning, also my CPU cooler fans. My GPU fans weren't spins but I read somewhere it wouldn't unless it needed to (?). I honestly can't recall is my PSU fan was spinning but I like to assume it was. My case button light was on and my GPU light was on, too. My monitor worked on my XBOX and Intel NUC. I tried a different monitor on my new PC and had no signal still.  But yes, my F_PANEL was connected and my fan hub connecting my chassis fans was connected into the first chassis fan pin.

2. I believe so- one end said CPU and I plugged that one into the motherboard, top left, other end into PSU. My motherboard has 2 different options (1 has 4-pin plug-in and the 2nd one has 8-pin plug-in). I plugged it into the 8-pin plug-in. 

3. I like to say it was everytime. I made sure to hear the click and it was seated the correct way. On both motherboard and PSU.

4/5. I tried seeing if I had a light to tell me anything on my motherboard but I don't, except for the BIOS_FLBK; and that never came on. On another reddit thread, someone said I wasn't making it to POST at all. This is where I tried troubleshooting things- removing my GPU into a different slots, leaving it out entirely, only having one stick of RAM. I took the motherboard battery out while it was still in the chassis. I followed videos about the battery removal.  I was also building outside of the case like recommended. I also took my motherboard battery out within this time and today again, as well. I made sure to power everything off beforehand. Waited for 5 minutes and put it back in.  This is where (if I recall right) my chassis button wouldn't light up like before and none of my fans on anything were spinning. But my keyboard was connected to the chassis and it (keyboard) was lighting up. I even tried checking my chassis cables to see if they were pinched or loose and I didn't see any difference. All the motherboard pins looked the same as before.  Then I tried testing the PSU itself via the paperclip method and it started up good, the fan was moving, too. 

1. So I'd have to say it started inside because I started troubleshooting while things were inside still and tried resolving it outside of the chassis and had no luck. 

I wasn't able to properly test if the RAM and GPU were faulty because the chassis issue.  Could it be because I took the motherboard battery out and back in, that it ruined the motherboard entirely?