elitebook 840 g2 egpu problem

[kozak145]

i have connected the egpu to m.2 slot that is pcie but it doesn`t showup or work no display but fans spin and slowed down when i started the laptop in windows it doesn`t showup in device manager and i can`t install drivers for gpu because nvidia installer says that there is no gpu  i have installed drivers for simple pci controller

[Huffer]

Not uncommon for M.2 slots designed for wireless or wwan to be limited to that function. Egpu on a laptop without a Thunderbolt port is a crapshoot as likely not to work as to work. 

[kozak145]

it is possible and there is no issue on normal pc to work with that adapter for m.2 just laptop has life issues not the first time when i have hp not wanting to work with something its just this time its harder for me to fix it because there is no tutorials

[Huffer]

Yes HP makes no effort to provide instruction on using any eGPU except the one they make, which is a Thunderbolt product. I frankly try to discourage trying to hook an eGPU to an internal M.2 or pcie slot but on some models we know it does work. Its purely trial and error as no way to know in advance.