Case shorting out Mobo?

Eat_those_lemons

Honorable
Nov 17, 2012
35
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10,530
My question is about my mother board and case. I have an asrock extreme 3 mobo and a rosewill challenger case (http://www.newegg.com/Product/Product.aspx?Item=N82E16811147153)
if I bump the case then the computer just turns off everything turns off but I can start it right up again. if I take of the side and slightly pull on the sata cables on the lower right side (diagonal to the cpu) then there is no problems but as soon as I take and push down then everything shuts off. also the screw in that corner is not put in because nothing will turn on if it is. I did RMA the mobo but the second one has the same problem.
Any Ideas on how to fix it? electrostatic bag between the case and mobo? new case? (I should upgrade my case soon but it would be nice to know if there is something that I can do to avoid this)

Thanks

Ethan