CD drives will not get power

I just built a computer,


Mobo- A8n-SLI
CPU- AMD atholon 64 3700+
HD- Raptor 74 gb
CD drives- 2 DvD rw (used from old computer) perfect conditin
Video card-nvidia 7900GT 265mb


I built it all up and turned it all on. I had no OS disk at the time so i just shut it off and minded my own buisnes. then later that day i realised that me PSU was a 420wt and the minimmum for that graphics card was 400. so i went to the store and got a 600w SLI ready PSU. Reconected all the cables and what not, turned it on and seemed to work fine. a day later i noticed that the drives would not oppen. dinked around for a bit and couldnt figure it out. Every thing seems to be in order. the only thing that i could think of is bad IDE cable, but nope it is fine D:

PLZ help

Try the drives with no IDE cable attached - they have to open like that. If they don't, try them in another computer.

Are you sure the master/slave jumpers are set properly?

Re:

Yeah the jumpers are corect.
i just tryed with no IDE and it turned on. how do i get it to work with ide cables in. could my mobo b messed up. what should i do now, because my windows media center comes from newegg tommorow

ty.