Motherboards keep Failing in new case

[bdyeager]

I swapped cases a couple days ago with my old system to a new case and now my computer turns on and the fans and cd romds kick on but im getting no display and my mouse nd keyboard also fail to work. Tried a new processor didnt help, checked video card and hard drives they both worked as well, what could be causing this problem. I went down to the bare minmums and im still not posting also tried new power suipply didnt work, any ideas why this could be? There was an extra post for mounting that i had passed up could this be the cause? it didnt scratch it or leave a mark or anything but could this have somehow shorted out my board?

 

[TheCorm]

What processors? What power supply?

Is the board securely mounted? Ensure that it is not touching the case in some way. When what you are encountering happens it generally is down to problems with the following:

1. Processor
2. Graphics Card
3. Motherboard
4. Memory

Have listed these in most likely order (in my experience). I have known people to slip while using a screwdriver to clip the processor in and they actually jab the motherboard and it still works.....what exactly happened?

Corm