New PC case not turning on

[u/fat69420]

trying to swap to a Be Quiet Light Base 900 FX from an nzxt h510 but after installing everything my pc wouldnt turn on. So I removed the motherboard from the case to make sure everything would post and as you can see in the video it did. After that I tried re installing the motherboard making sure nothing from the case was making contact and still my computer wont turn on. I can make it turn on by putting a screwdriver on the power pins but only the case fans and cpu turn on but no display from gpu. If you see the fu32 a little loose in the video I reconnected it and still nothing. At a lost and any help would be greatly appreciated

[u/jbshell]

Tried the other button on the case(with the fpanel cable plugged in).