HARD DISK RECOVERY/ FAULTY

To start off, DON'T PLUG IT IN.
If you plug in the drive you could risk damaging the platter (and then meet permanent data loss).

Let's consider your options:
1- Open the drive and perform a manual repair (extremely risky)
2- Consult a data recovery group with the tools to do this correctly

1:
- Open the drive and plug in the power, check if the head meets the platter correctly then the motor on the platter spins without issue
If the head doesn't move then it's likely to be either the head or the board.
- Replace the board (safer) then head (risky) and attempt to run after each repair
- Recover the data and call the drive a loss
If the platter doesn't spin it's likely to be the motor.
- Purchase the same drive
- Swap the platters
- Recover the data and call the drive a loss

(This is a guess, everything is on you)

2:
- Call a company who can perform the recovery safely in a cleanroom
- Just call them
- The only thing that'll regret it is your wallet
- Call them and save your data
- Why are you reading this you should be on the phone with a data recovery group right now
- Call them