My WD 1TB External Hard Disk plugged in but not readable......:-(

I have my WD 1TB External Hard Drive. When I plugged in my HDD…the light blinks but is not showing in  My Computer. I have tested in disk management. There my drive is showing but it is unallocated and says it is write protected with a RED colour above. I’m totally confused what to do. Please anyone with helping hand are welcome…

Thanks in advance

Hrishikesh

Try updating the firmware, but if the same problem continues you might need to replace it.