So, I went on vacation, left my pc off and come back to it not booting and the boot light red on the motherboard. I can get in to the bios, but it takes forever for it to actually get in to the bios once powering on. I've checked all cable connections and the bios recognizes everything and everything looks like its getting the proper voltage and running at the correct speeds. I have an asus z390-e motherboard, with a samsung 960 and samsung 970 sata ssd's. There seems to be a greenish mark on the bootchip on the motherboard but i can't tell if thats a burn or just a mark to signal the first pin. I also replaced the battery on the motherboard. Not sure what else to do, I've never had this happen and it happened so randomly. Any insight would be appreciated!