Hello Rick,
Please note that you need to shut down the Virtual Machine before carrying out this process.
1. Open Configure Options.
2. Go to hard disk 1.
3. Click and choose image file and click ok.(Ignore if you receive any errors)
4. Again go to Configure options.
5. Go to Hard disk 1 and now choose Bootcamp and click OK.
Now try to start Parallels.
Let me know the outcome of the above steps.
Thank you.