XPS 2720 -NO Bootable Device

I have an XPS ONE 2720 (4770) running Win 10 Pro. I Purchased an SSD Card from Crucial(MX200 500GB). Installed the card and when I restarted the PC I got the message; NO BOOTABLE DEVICES. Press F1 to retry, F2 for Setup. If I pressed F1, it would load up windows fine. The SSD was detected and useable but every time I restarted the PC, I get the message. I took the card out, and the PC boots fine now. Anyone seen this before and if so do you have a resolution. Thanks