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I would try swapping the physical positions of the SSD and the HDD so that the SSD is on the first SATA port and the HDD is on the second SATA port.
I would try swapping the physical positions of the SSD and the HDD so that the SSD is on the first SATA port and the HDD is on the second SATA port.
You can try to repair the boot up issue with a rescue disk can make one in system settings under update and security then click backup. Click on go to and backup (windows 7) then click make a system repair disk, it states as you're going through the menus that this works for windows 10 even though it's a win 7 classic settings menu ran from your win 10 environment. Can also try Macrium Reflect software and create recovery media through that software to a usb drive that will give you tools in a windows PE environment believe you just need a iso of your win 10 or the actual dvd. Hope this helps.
Oh make a restore point first if you can
NavyLCDR probably gave you the best answer of all i just read back and saw his post, he linked
Windows 10 Recovery Tools - Bootable Rescue Disk - Windows 10 Forums