Hi all didn't really know where to put this question, I suppose a bios wall would have been better but there isn't one.. Just finished building a pc. Started it up first day no issues, installed windows and all my gear no problem.. Day 2 I change a few things, I add a fan, I change an old red sata cable on the bdrom to a new sata6 cable. Low and behold now every time I switch the computer on or restart it it starts up, all fans and lights and everything work then 2 seconds in it all switches off then switches back on and boots up normal.. Any ideas? I've tried removing the fan but it still does it, I've removed the heatsink, put new thermal compound on and heatsink back on.. No joy there.. I've checked bios settings all seem to be the same... I can live with the double boot up but I'm worried it will damage some of the components My rig is: AMD Ryzen 7 1800x Asus prime b350 plus mobo Radeon rx 580 nitro+ 2 sticks of Kingston fury white ddr4 ram 16gb each Dark fury 4 Pro heatsink cooler Corsair cx650 psu Creative xfi sound card I have 4 fans running on the case and your usual cpu cooler fan..