Problems installing Motherboards In Rosewill Case

[oldbutdumb]

I have tried a few times to install mb's in my new Rosewill case and have only been able to succeed when I insulate the board from the case and only attach the switches and the hard drive and keyboard & mouse connectors. All posts completed and Windows was starting. Then I screwed the board to the case only to have a failure to post at startup. I think I need some kind of insulating screws/keeper nuts but what about the clips that ground the rear inputs for mouse, keyboard, usb connectors and ports? I started to do the cautious testing based on advice here but what is the next step?

 

[montag451]

Have you checked that there are no excess screws underneath the mobo?
Take off all the ones that you don't use to screw the case down with .

 

[Fiat1]

You are you useing standoff's? They are usually gold in color and keep the board off the deck.

 

[oldbutdumb]

I have about 9 gold colored (brass?) standoffs for the board. I was considering using plastic standoffs or plastic washers. Is this a unique problem?