8TB G-RAID Turns On Then Off Immediately

I was just using my G-RAID, turned the computer off, then realised I’d forgotten to copy a file, turned it back on and the RAID didn’t mount. I hadn’t turned the RAID off but it was off. Held the button in to turn it on, white light came on then immediately went out. This now just keeps happening and it won’t turn on. Any ideas?

Make sure the drive is attached firmly to the computer. Also don’t hold the power button, just a simple press.