Leaderboard

1. Remove ALL existing NVidia drivers, then use 'DDU' software to remove NVidia registry entries as well as disable automatic driver installation. Reboot system and load latest NVidia desktop driver: https://www.techinferno.com/index.php?/forums/topic/9289-optimus-now-works-in-win10-using-36175-driver/ 2. Free up dGPU resources: Go to Device Manager -> View Devices By connection. Find your D500 dGPU. Directly above it will be a PCIe Bridge. Disable it. When you do, the D500 will completely disappear. 3. Re-allocate your TB chain in an attempt to fix error 12. Go to Device Manager -> View Resources By connection. Find your eGPU. Now directly above it will be a multitude of PCIe bridges (5 or so). Disable them one at a time working your way up. Once done. Re-enable them again. 4. If you still see error 12, then the final fix that has worked for ZBook and Lenovo W54x Thunderbolt users is to perform a DSDT override: https://www.techinferno.com/index.php?/forums/topic/5874-guide-dsdt-override-to-fix-error-12/ I'll add too that the Thunderbolt SSD adds complexity to the eGPU allocation since it too needs to be allocated. I'd suggest do initial testing using a USB 3.0 drive instead. Then later on can add it and see if can get the drive + eGPU working concurrently. They should be on separate Thunderbolt buses to ensure don't share bandwidth: http://www.fcpworks.com/thunderbolt-bus-mapping-new-mac-pro/

The PE4C with key A/E is the right for you, but after insert the adapter is not sure it will work , as I know you are the first with that laptop model. The problems can be: not whitelisted slot, tolud.. And some of them can be very difficult to solve.. But you can try if you feel lucky, and you have spare time. I've made a eGPU setup with a "tested" laptop and I've worked for a month for make it work almost properly.. Maybe yours will be plug and play.. Or with egpu setup software you can do a mod easily.. Bye.