Hi guys, I have a single USB port on my laptop which doesnt work. It has power but nothing happens, I have reinstalled all USB Root Hub and have tried using windows 7 and linux livecd. I have tried with many different devices and they all work on the other ports. Things like portable HDDs spin and usb thumb drives with lights glow. I cannot remember if it ever worked. I brought this laptop recently so it is obviously in warranty and I can probably contact the store I brought it from. Any ideas?