Hey there, MrCMoney.
I'd recommend that you access Disk Management, to see what it says about the drive and its partitions. It would be great if you could post a screenshot of what you see there (you can use imgur.com to upload the image). What kind of error do you get exactly? For data recovery, you could try the drive with a different computer or at least with different SATA cables and port on yours, to see if it's recognized and if you can access the data. Another option is to try an access it via Linux Live USB/DVD, to see if it's properly recognized, or try with data recovery software: http://www.tomshardware.co.uk/forum/id-1644496/lost-data-recovery.html.
Hope that helps. Please let me know how everything goes.