Roger that, will do as you said. I did said I struggled a bit with the cooler installation, I don't have those standoff screws which I think are used to hold the base support in place (that goes on the back), something the pump had, so I had to hold it with my hand. Maybe I did messed up during the installation and the whole thing is uneven, working but uneven. Or maybe the whole board is messed up and I'm just coping lol. We'll see tomorrow.
The Z370 is not compatible with the 7700K, even though it's LGA1151.
Damn, I certainly did not know any of that. Motherboards are a very weak point of mine, like I can't tell the difference between my model and newer models apart from like DDR4 or DDR5. Jeez, one really needs to appreciate people who really know about this stuff. I would be completely clueless if left alone.
Done some work. Took the cooler and CPU off, cleaned the thermal paste from it (it seems that I have applied a bit too much of it and some of it leaked to the side, but I understand this isn't a massive issue because it isn't conductive). None of it fell into the socket, though, which saved me a lot of trouble. I did, accidentally, got some thermal paste underneath my i7. So I went to look for some videos on how to properly clean off thermal paste, I found this one to be pretty useful as the guy makes a whole mess out of it and cleans it (even though it's not intel). So I used some alcohol, a toothbrush and began to clean off the thing very carefully, I didn't have some of these blue wipes so I used soft paper tissue, I hope this doesn't bring me any issues. Regardless of this, I didn't notice any bent pins.. I placed it under a light and used a magnifier to look for the little bugger but there was nothing.
I reseated the cooler afterwards using the method you recommended, put the RAM into the A2 socket and it booted, first telling me that a new CPU was installed. Now it appears to be fine, but I don't know. Earlier today it failed to boot even at B2 which did boot yesterday.
We shall see, it will remain under observation. I truly hope this is just a case of badly seated CPU+Cooler, maybe the guy who built it first didn't seat both things properly (after all, the pump was connected to the wrong pins and he told me replacing the liquid wasn't necessary), maybe when I replaced the Pump I failed to seat the cooler like it should. I will hold my breath for now.
I will continue to look for new ~~old~~ boards regardless, I will ask around my friends if they know about any offers. If I can't find a good Z270 I'll make an offer to the guy that sells the Maximus X Hero, we will see.