i bought a new pc yesterday , it was Cooler Master Centurion 5 casing, and omg all the casing part outside/inside got electric when the pc on , its not some small electric , but it Stuns me, and i use test pen to test and the light is very bright as well.

is there any way to fix or its just Centurion common problems? ( if yes then im changing )   

thanksss