|Johnw its a local copy of .pst or there would be no need for recovery software.|
Flox15 you should never install software when trying to recover a file. You run the recovery software from a usb or cd boot disk. This prevents the file from being partially or fully overwritten.
Another aspect is how much free space do you have? If not much then a deleted file can be overwritten immediately.
There is also the issue of a corrupt file table. You run chkdsk /f to correct this.
But all of this sounds too late in your situation.
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