Yellow flashing light

Please someone help! My MyCloud EX2 ultra has a flashing yellow power light. I have changed Ethernet cables and hooked it directly to my router and also a network switch but with the same result: NOTHING! I can’t even get it to reset no matter how long I hit the reset button!! I’m in RAID 0, And ALL of my media files are on there!! My entire Plex library!what else could it be???