However... I'm not entirely sure what to do.
My former computer was IDE (or ATA?) - it had those wide gray cables to connect the drives. My new computer is SATA, and has those fettuccini-style red cables.
Notably, the fettuccini cable doesn't have space for another hard drive on it. And I'm pretty sure my old drive would have no place to stick a fettuccini-cable.
I saw that the new motherboard *does* have a slot that fits the thick IDE cable.
I plugged my old hard drive into the new motherboard at that slot using the IDE cable. I also attached it to the same power cable that the regular hard drive was on.
However, the computer wouldn't start up. That is, it would turn on and give me the "We had issues starting up, probably something with your hardware, how would you like to proceed?"
How *should* I proceed?