Fitted a new PSU a few days ago,dismantled the PC to make fitting the PSU easier.
All wen well,so I thought.
I have two MB USB2.0 headers,both will accommodate two ports.
My card reader will work fine on either of the two headers,but when I connect the two cables from the top USB ports,and connect to either of the headers,the ports are dead.No USB device will work via these ports.
I have checked the cables they seem fine,and like I said the ports are live.