Hi Bernie

It sounds like your old HDD is on its last legs, and is why you keep getting the repair option and sometimes not booting.

Option 1:

Install your old drive into your new computer then go into the BIOS and set it to boot from that HDD to see if it will repair itself and get you going. If it does you can copy over your system OS to the new drive, (NOTE: this will overwrite any existing OS on the new drive) a free program to do this can be found here http://www.partitionwizard.com/free-partition-manager.html.

Option 2:

Install your new drive in the old computer and see if it will boot, if so you can try your codes again as they may be tied to the hardware in your old computer.

Option 3:

Contact the developers of the program and explain what has happened, and they should supply you with some new codes. (This will depend on the EULA that came with the software)

Hope this helps

Bill