Yesterday i installed a new mobo and cpu.The problem is that when i try use mobo's usb ports (4 all in the same usb box)upper ones work fine,Computer doesn't start at all,and the board's green led is blinking.When i investigated the problem,i found out that one of the backplate's ground flap was inside the usb connector.When you power it up,does that break the usb?i'm so ashamed for making that kind of a rookie mistake,never happened before.
