No network and No lights from device

Hi there,

I have My Cloud Home 3 TB. I have been using this device for past 3 weeks. Recently, my device becomes completely unavailable. There is no power light in the network cable and no light from device. This could be an issue with power cord or device? How to check and fix it? I have tried switch off/ on the power switch and removed the network cable. But still the issue remains the same. Let me know who to fix the issue.

Thanks
Sabari