Perhaps your new <and old> power supply isn't capable of handling all of your compoments? Or maybe your new ps is just defected. Your motherboard may not work as well with your power supply, check...

I really dont think that you can spend less than a hundred dollars on a power supply to supply that. And if your willing to spend so much on the computer parts, why dont you spend the same on the...

Oh, also, if the new case doesn't include a power supply, which it should, you can either buy another one or move that to. Hope this helps.

Basically, you could probably google it or find some websites to tell you how to change cases, but its pretty easy to do it yourself. The way that I will describe should work, and I'll try not to...