I am sorry you're having such problems, Cian.
I am not a PC expert so unfortunately I am not able to help you with the BSODs.
But from my experience, check the power management setting, if you haven't already. Go to Power Options / Advanced settings and DISABLE "USB selective suspend setting. Also, make sure you plug Scarlett to SUB 2.0 port, not 3.0. I have read somewhere it doesn't work in USB 3.0 ports.
You can also try to uninstall the drivers, restart the PC, and run the installation again and make sure you will Run it as administrator (right click on the Setup file and choose Run as admin). Turn off any anti/virus, firewall or other security apps before the installation.
Common recommendation is to perform MemTest 86, so you can try that as well, but since you're getting BSODs only with this particular device, I would be surprised if your RAM was the culprit.
In either case, you should contact Focusrite tech support. I am sure they will help you in solving the issue.
I believe once you resolve this annoyance, you will enjoy using Scarlett.
Good luck and let me know if I can help you any more.
Marek