I have a z390 aorus Xtreme motherboard. Whenever I plug my known good psu into it, the onboard power button, along with the rear IO LEDs will flash for a split second, then shut off, and repeat. I cannot post, or turn it on at all, and tried removing the battery already. From what I gather, I suspect it's got something to do with the power delivery to the motherboard, but I don't know how to fix it. I do not have warranty information, and would appreciate any and all help. Thank you.