Pcie riser not working

[mr_azerty]

Hello. I'm using a pcie x1 - 4usb to pcie x16 riser setup. The risers are powered by a sata-molex cable (Yes I am aware that they have heating problems.). When I try to boot up my pc with a riser and a gpu attached, after passing the opportunity to enter the bios my screen turns black (The monitor stops receiving data from the gpu installed inside my pc). I have no idea why this happens, but if I use the exact same gpu but attach it directly into the motherboard it works just fine.

EDIT: I tried replacing the card my monitor is hooked up to from a rx570 to a gtx1060, this time my pc boots up just fine but the monitor freezes after about 10 seconds.

EDIT2: I forgot to mention that when I unplug the external gpu and boot my pc up normally, I get a notice about openCL not working properly.

 

[mr_azerty]

I said only disable what's not needed. If you need it keep it on.

How's it going, did it work at all?

Welp, after some tweaking and bios settings, I finally got my computer to boot up with the external gpu's plugged in. The problem now is that my gpu's can't do anything without drivers. When I try to install the drivers for them, my screen freezes during the process. Two out of the four gpus stop spinning their fans.

 

[Mark RM]

Try adding cards one at a time, you might find a four way splitter can only deal with two cards or something.