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#11
I am not thinking about the seatools, despite of it being odd. Because, Seatools is not for the SSD, the SeaGate HDD is not any suspect (at least till now), and the suspect, the external HDD is a WD; we checked it with a different appropriate program.
It is good that you updated the SSD firmware.
And I think you should take a care to the My Passport disc. Either full format it to see if it can solve the issue; or retire it.
Let us know for any further BSOD.