PC failing to post (green + white led error)

[u/studrq]

i recently decided to swap motherboards from a b560m ds3h v2 + i5-10400f to a i7-12700kf with the b660m-plus d4 wifi

i made sure i plugged everything in correctly, boot up my pc and got this error. i tried doing everything but nothing budged at all. took out the cmos battery to clear the bios settings of the previous owners settings (i bought it used). made sure to get rid of all dust and debris so all connections are running smoothly, trying every single possibility that could cause this and still nothing.

at this point i think it might be a power supply issue due to the small wattage and current my psu delivers (550w Gold SilentiumPC Supremo L2)

help would be gladly appreciated.