I have two WD hard drives with the OS installed on one and the other is for storage. All this started with a hard shut down when the PC froze and then after the restart Windows wouldn't boot at all. It was stuck at the Windows logo for a very long time. Then I checked in BIOS and I noticed the secondary drive was nowhere to be found.
After letting Windows run the automatic repair on the drive the drive showed up in BIOS and I could access two of the three partitions. The third partition threw me an error saying the disk structure is corrupt and unreadable when I tried to open it. In Disk Management the drive showed up as RAW format and healthy. Then I tried to backup whatever I could from the accessible partitions before everything froze.
I rebooted again and right now none of the partitions are visible in Windows and is not detected in BIOS. But in Disk Management it says the Disk 1 is unknown and has to be initialized and asks to initialize with either MBR or GPT partition styles. I've also tried running chkdsk, used EaseUS Recovery and other third party data recovery tools but none of them detect the drive anymore. The drive is however visible on HD Sentinel and it says there are bad sectors and data must be backed up immediately. Does this mean the drive is completely dead? I have over 700GB of invaluable data on it so I don't want to just give up. Any help would be greatly appreciated.
Also, I ran a prescan with HDD Regenerator and it says the MBR is corrupted and the WD Lifeguard tool shows me this after running a quick test.
OS - Windows 10 64-bit
Motherboard - Asus P8H61-M LX3 R2.0
RAM - 2x Transcend 8GB DDR3 1600Mhz
Primary drive with OS - WD Blue 1TB WD10EZEX
Secondary drive - WD Green 1TB WD10EARS