Hi - I have a 6 month old LaCie STFY10000400 10 TB d2 Professional Thunderbolt 3 hard drive, it's been great until this morning when I tried to access it after a few days away and it won't turn on. I have tried 2 different power cables, unplugged it and plugged it back in and tried holding the power button down for a few seconds. The blue light flashes very briefly and then nothing happens. HELP! I am on a Mac, Mojave OS. The drive is less than half full.