What to do with the error message “.dll resource is missing.”
I’m afraid there’s not enough information for me to say what happened to your e-mail and, therefore, whether it is recoverable. It’s certainly possible that even if the drive has been reformatted much of the data can be recovered. But you’d have to take the drive to a data recovery service to do the job. And be prepared to pay somewhere in the neighborhood of $200 if they’re able to find anything. I know the horses have already left the barn, but e-mail and address books are probably the best argument for making regular backups. I’ve been in the same position before. I bought an inexpensive USB external hard drive and set the Windows backup program to make daily backups. That way I don’t have to think about it.