System cannot find file specified

I have a Dell Inspiron where the hard drive failed last weekend. I was able to install a new hard drive and get the machine up and running...now I am trying to retrieve data from the old drive.

I installed it in an external hard drive enclosure, I have attached it to the PC, and it is recognized as drive K: labeled OS and as a drive J: labeled as RECOVERY.

When I attempt to do any type of scan, I receive the message that "The system cannot find the file specified"

When I try to do a CHKDSK, it tells me the drive is RAW.

Machine is Win 7 64-bit, the drive was 750 GB Seagate SATA.

Any help would be greatly appreciated!