The drive did show up as healthy in Disk Management, but I had no options available. I came to the unfortunate conclusion that the drive was dead :( So I changed my tack, and started to try my luck with data recovery. Most programs can't help because they only recover deleted files, not dead or damaged drives. I found a wonderful program called iRecover http://www.diydatarecovery.nl/irecover.htm
It recovered all my files and I bought a new drive :) The only thing is that now I am too tight to pay the money for the program, so I am stuck recovering the folders one at a time
Thanks for your help!