Use the chkdisk command from the run box in windows. You will have only lost data that is being written to the disk at the time the plug was pulled. You have more than likely upset the boot file that hold the information as to where the files are stored. The chkdisk solution has already been mentioned, it will check your boot sector and file allocation tables and repair these so the files can be read again. Unless there is a mechanical reason for the disk failure then using file recovery software will be a waste of time and money. There is plenty of information on the web as to how to use chkdisk as it's a Microsoft utility and is included in your operating system from DOS and up.