Hey,
Just picked up my 5.1 kit and put it together a few days ago. I couldn’t get the system to boot. I decided too try inserting the micro sd directly to the pi and it booted with no bother. I have re-inserted the ribbon cable a few times and retried to no avail. I was wondering where I could go about getting a replacement cable from as mine may well be broken. Too harsh of a bend? Not sure.
Is there anything else I could try to eliminate possible issues? It seems pretty cut and dry to me but I’m no expert. I’m using a 256gb card if that matters and as I said, it boots fine if its inserted directly to the pi