Dude i did everything correctly and doing what you were saying and it work for a little while and then my monitor wont turn on for some reason so i was pulled one of the cords out of pins and next thing you know it wont boot up anymore. So then i put everything back where it was and it wont work anymore =(. I think its my crap *** motherboard, ill get a new mobo and then try it again, which will be later on in the future haha.
Your monitor wouldnt just quit because of those cables. Actualy it wouldnt affect anything actualy cept the LEDs and the power on switch. I think your messing w/ something else instead and not realizing it.