I was using WD black2 as my primary hard drive of my HP laptop and OS is windows 8.1. Recently windows update updated WD Black2 Update. After that update laptop keeps restarting loops which has above error. INACCESSIBLE_BOOT_DEVICE
What I have tried
Tried system restore - surprisingly there is no any restore points available.
tried to do startup repair - did not work
Tried to refresh system - did not work
Tried to boot to safe mode -did not work