System Refusing to Boot from M.2 after plugging in old SSD boot drive.

[Hunter Velasquez]

So I've been troubleshooting this for the past two hours now and nothing is working.I needed more space on my computer so I remembered the old SSD that used to be the original boot drive for my PC that was just sitting in there unused. I upgraded to the Samsung 960 Evo years ago and used the Samsung Data Migration to move things over.I plugged in the old drive and my computer booted to it instead of the M.2 (Samsung 960 EVO) that I've been using for the past 5-6 years. I restarted and booted to BIOS to change the boot priority, but my M.2 was not listed. I turned the system off, unplugged the

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