My primary M.2 drive and my two SATA drives show up, but I can't seem to get the computer to recognize my new second M.2 drive. I've tried switching around the SATA cables for the SATA drives, because at one point one of the SATA drives was also not showing. But right now. Only the second M.2 drive is still missing. I do have a 1080TI GPU graphics card, so I'm wondering if that's taken up the rest of the resources or if its something else.