Unable to boot after cloning laptop SSD

Hello:

I have a legion y730 17", that I have cloned the 128GB ssd, to a Crucial MX500 SSD. It was migrated to an external chassis that temporarily held the upgrade SSD. I followed the migration steps. But when I swap out the laptops original SSD, with the new migrated SSD, I get a check media, and then a choose boot disk. Here's the problem I can't disable the UEFI setting to set up a legacy boot to select a different boot drive. Can anybody help me out here?

Thanks

I've been able to change the boot order to get the Crucial drive to boot from the external SSD chassis, but i still get an inaccessible boot drive error.