Solid yellow light, cycles back to blue and back to solid yellow

I rebooted my computer today (mac), and the my book live light went blue. it then went through its bootup process with the light going to a solid yellow. it just stays on a solid yellow (you can hear the hard drive spinning) and then after about 10 minutes the light goes blue again for about 15 seconds. The light then goes yellow again and it just does this over and over again.

I’ve pressed the reset button in the back of it and it just goes through the whole routine again and again, never actually getting to the green light.

I wasn’t carrying out any firmware update or anything on the drive.

Anybody got any ideas on how I can get the drive to boot again? Or is it bricked?

Thanks.

Hello, you can try disconnecting the power cable for 15/20 seconds and then try again. 

Didn’t work unfortunately. I tried it several times, along with the reset button several times as well.

I returned the drive to the shop and they gave me a new one. Now the long task of recovering my 3tb of data begins!!