Actually, I accidentally turned off the PC power once the hdd was locked. When I turned it back on it showed an error message. I was able to use Microsoft Media Creator on my laptop to create a Windows 10 bootable USB thumb drive and reinstall Windows 10 on the Inspiron desktop. I plan to backup the hdd to a USB thumb drive before I clone the hdd to the ssd.
I began cloning my hdd to a new Crucial ssd using Acronis True Image. It reached the point where the hdd was locked and I lost power. Noww it won’t boot. I don’t have installation media for the original OS Windows 8. I have a Windows XP CD from an old Dell but my Inspiron doesn’t even try to boot from the CD. I do have a laptop that I cold use to download Windows and make a bootable usb flash drive. Any ideas.  
Inspiron 660 not booting after interrupted cloning of hdd to ssd