If you're going to put the drive in the freezer - and this can help, for certain specific problems - make sure you wrap it up in waterproof anti-static first. Also, if cooling the drive helps, you will only have a limited amount of time before it warms up and stops working again, so have a clear idea of what data is most critical, so you can grab it first.
Freezing the drive is generally of more use when it's an electronics problem, but it has been known to help. Most drive manufacturers offer drive-checking software, which may be of some help - for Seagate, check out
http://www.seagate.com/ww/v/index.js...00dd04090aRCRD
Good luck!