Hi, My usb ports area not working after i install windows 8.1.... my Laptop HP Pavilion G7-1338DX came with windows 7... My hard drive crashed few months back... so i installed new one with windows 8... When i updated to 8.1.... 2 out of 3 usb ports are stopped working and even the workiing usb port also works only i connect mouse and keyboard...when i try to connect external hard drive and iphone it wont recognise the devices.....so i tried to uninstall the drivers in device manager and restart the system same problem....even i try to remove the battery for 15 mins and restart the system same problem..... so please help in this problem to solve the issue..
thanx in advance