Not working on any other PC either - - it's definitely history.
You need at least two copies of your data on two separate hard drives, though three is even better since it's not impossible for two hard drives to fail at the same time -- but all three failing at the same time is highly unlikely. I use four drives for backups.
If the data is woth spending money on to retrieve it, send it to a data recovery service (but see your bank manager about a loan first 'cos it doesn't come cheap!).