I was actually expecting a problem like this to happen, but I thought I had everything hooked up properly. Anyways, I got my Xaser case in, christ was it huge! Here is the problem. After taking 4 hours to put everything together, lot of wires.. believe me, I tried to turn it on, and the first thing I would look for is to see if the motherboard got power. I look at my ethernet port because it lights up, and if it does, then the motherboard got power. It didn't though, infact when I pressed the power button, nothing worked. I don't think I fried my motherboard, but nothing at all would turn on. When I would turn off my PSU it makes that power down sound, which I think is normal. My PSU is a thermaltake one that came with the Xaser case and it's 420 watts, plenty of power. I tried my 450 watt and the only diffrence is that the cpu fan jerks for a sec. That got me to thinking that the motherboard wasn't fried. This problem has me totally stumped as I have all the leds and switches all hooked up as before in my other case. I could use some help, but if not, I am taking it to a repair store and see whats wrong. If you need anymore info, let me know by private messaging me.