Its a little confusing but I dont think those USB cables should have anything to do with a disc boot failure, that usually means theres no OS, or a number of other things, (one of them being a F#Cked up OS). Take out your Ide Cables and put them back in, making sure the primary drive (if you have more than one drive) is connected right and.. not a big deal but I think it should be on the end of the cable.