Since it's showing up properly in DP, The possibility of hardware fault is thin.
Check the sata cable to see if it's properly connected
This smells like dynamic or any other srewed-up partitions on the disk. I would try: Format the disk with Command Prompt on your installation disk. The commands are: Diskpart List disk Select disk n (where n is the number that was given for your 3TB in List disk) Create partition primary Active Exit
* Change the optical drive to UEFI from AHCI in Bios before proceeding ...
Btw, hw come you sell a faulty hdd in olx and also claim refund for the same from the seller? Are you not suppose to give back the hdd to the seller to get a refund or replacement?