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Microsoft Windows 10 (64-bit)

I recently decided to upgrade my HDD to an SSD. My motherboard is an HP 18E4. I bought the Samsung SSD 970 EVO Plus and then put it on a Sabrent NVMe to PCIe card because my mother board doesn't have an M.2 slot. Then I inserted this into a PCIE2 slot and then copied my HDD to it.

 

But now when I take out the HDD and try to boot with the SSD, I get the error message, "Non-System disk or disk error." I can't find any reference to the SSD in my boot options, so I can't just move it up in the boot order. I've made sure that all PCIe slots are enabled and this hasn't fixed the problem. 

 

So I tried a fresh installation of windows onto the SSD from a USB. Windows got through the process, restarted, and then I got to the same error. So then I backed up all my files from the HDD and tried a fresh installation on the HDD from the same USB to make sure my installation files were valid. The USB installation worked on the HDD . . . but only after I removed the SSD from the motherboard and left the HDD connected. How do get my system to recognize the SSD through PCIe?

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