If you accidentally deleted the file try using a commercial file-recovery utility that scans the disk and makes easy deleted file recovery. When you delete a file, the operating system probably won't erase the actual bits from the disk until it needs them for something else; therefore, you may be able to recover some data. If you need to easy restore data recovery, don't install any undelete utilities onto the hard drive where the lost file is located, or you may overwrite its contents. Instead, run the program from the installation CD, if possible.
Always make sure you have a way to easy restore data recovery from your backup to the main system. Regular backup of local hard disks prevents data loss from a disk or drive failure, disk controller errors, power outages, viruses, and other serious problems. Not all data is recoverable, but easy deleted file recovery can easy restore data recovery on damaged media.
So, to easy restore data recovery you will need software from a...