Need help. I've got 2x Biostar TB250 pro mobos. I've tested with 4 different psus, dual 1000 watts and also tested with dual 1600 watts. Tested with pci connected. I also tested with mobo dvi only no pci connections. No matter what, the mobo fires up for 1 sec enough to quickly spin fans and then dies completely. Both boards have done this. All psus tested good. Should I just scrap Biostar and go back to Asus? Never had this problem. I'm even running single 1600 watt on a Asus mining expert. Not one problem with boot. I don't want to hear it is not enough juice. Mobo alone with no pci slots only should be pulling max 350 watts at post with an i7-7800. I know this because I have a killawatt and another system to prove it.