And you haven'
I did that and nothing. Still no display.
It feels like the board is constantly restarting because the psu keeps making clicking noises.
I mean, like one guy said earlier, I've seen people put motherboard standoffs in the wrong place and that'd cause the kinds of problems you're describing.
I mean, the procedure you go through as a tech, is you tear it down to the beginning. Pull everything apart and put everything back together again, one bit at a time.
Start with the motherboard. Double check the standoff placement. You might have one for every hole, but you might have one where there ISN'T a hole.
Move to the CPU. Check the pin grid. Bent pins are notorious on motherboards, EVEN NEW ONES.
Is the CPU in correctly? Why not pull it out and double check it? Maybe re-seating it will help.
Pull the ram. Be super attentive when you install ram. Sometimes it can seem like it's in all the way and it'll still be riding up a bit or crooked. Some ram sockets require a surprising amount of force to get sticks seated.
Start with 1 stick and try do boot it. Still no? Try another stick, pulling the first one out. Try each stick 1 at a time.
All the power cables. Unplug em and re-plug em in, double and triple checking to make sure. Did you mistake a video card power cable for a motherboard power cable? Double check. Triple check.
Every part. Every screw. Ever stand off start from scratch and build it again.
I've had to do this once or twice, if you build enough of these things you WILL get a "fail to fire", any tech that tells you "Never happened to me" hasn't built enough. Usually when you start from the beginning, provided nothing is DOA you'll figure it out.
Keep us posted.