Boot 15-7559 from new m.2 SSD

I finally added a 500 GB WD Blue SATA SSD to my Inspiron 15-7559’s m.2 slot

I used Macrium to clone the HD to SSD, and laptop booted fine from SSD, but only if I interupted process with F12. No luck adding it to boot order in setup.

Thinking I was following instructions I found online, I first nuked the boot partition from old HD. On reboot laptop wanted to repair HD, but would still boot from SSD if I interupted process with F12. Then I nuked remainder of old HD partitions, and now booting from SSD is no longer offered, and still no luck adding to boot order.

I have a brick

Any suggestions for convincing laptop to boot from SSD would be greatly appreciated