neoseeker

Update: Bought an ATX PSU today, plugged everything in and tried to turn on the system without a jumper, nothing happened, not a fan running or a light. Looks like I'm going on the right path. Update 2: I pluged the wrong 4 pins, now it is all the same again. The GPU fan runs like hell but nothing happens. Well, I'm not sure if the EXP GDC got broken when setting up all of this but if I re enable port 22, it got freeze at bios, it means the EXP GDC still work right?

Sounds like overheat issue to me. Try using measuring software like Speccy and record the temperature when idle an when gaming.

It looks far more easier with an ATX PSU, I have the very same problem as you and I plan to buy one and test it out soon.

Try tape your pin 22 http://pinoutsguide.com/Slots/mini_pcie_pinout.shtml. It worked for me for the freezing part. Looks like ASUS got mPCIe ports messed up. But then my lap just refused to detect the eGPU, and both the GPU and the EXP GDC worked fine when I bought them separately. Edit: I still use the Dell 220 W comes with the EXP GDC for my HD 7970, can it be the problem?