If the plug fell out the drive could be corrupt. If you intend to try professional recovery don’t try anything. TestDisk http://www.cgsecurity.org/wiki/TestDisk might fix it. You can also try booting from a Linux Live CD. That sometimes allows access to data so you could copy it. There is also data recovery software Recuva http://www.piriform.com/recuvais a free one. There are many Paid ones that let you test by recovering a small amount before buying.
Joe
