eGPU not detected
I have an HP Elitebook 840 G1, and I bought this dock with a CV450 PSU from Corsair. My card is the ASUS STRIX GeForce GTX 960 2GB OC. When I boot up the laptop the GPU isn't detected both in BIOS and Windows, but the fans on the PSU and the card start spinning. My dock requires a 24pin connection, so I couldn't do the paperclip trick to keep the PSU always on. I connected it through a spare m.2 slot that isn't occupied. (assuming it's meant for SSD or HDD)
P.S. My knowledge in this kinda stuff is minimal, so please bear with me
I would start with exploring your BIOS. See if you can turn off dGPU. And if you can unlock m.2 ports or enable it somehow accept other devices.
My guess is you wont find these things. But you can try.
If you dont see these things your only option is to unlock your BIOS. Find a modded bios for your laptop and flash it. With the unlocked BIOS you can disable dGPU and unlock m.2 slot so it accepts your GPU and not only hard drives. After this your eGPU will should get detected.