I was building a pc and everything went well until I plugged in a second storage drive. My ssd was showing up before but when I put in my hdd it doesn't anymore but my hdd does work. When I switch around cables the other one works again but the previous one does not. When I power only one it doesn't matter in what power cable I plug it. So the cable isn't broken and the disks aren't either. What's going on? Btw the the second cable extends from the first one. And it is SATA. The issue is that one of the 2 does not get power.