Cases power button flashing no display after first boot


first time PC builder built a PC using the microcenter bundle of an I9-12900k ASUS Prime Z790 DDR5 Wifi and G.Skill Ripjaws S5 32gb I've double checked all the wires and they're secure 850W Psu connected (24pin, cpu and gpu) and secured it as well However when I press the power button to turn on the system It'll turn on the cooler will spin and gpu fans too but a flashing blue light from my power button stays on and i'll have no display switched my hdmi cable from my gpu into the motherboard same result I heard it was improperly seated ram I've made sure to properly seat it until i heard a click from it I've also removed one to test but the blinking light goes from being fast to medium then slow


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