I have a Hp a530N AMD64 3200+ 512MB Ram don't know what kind of motherboard running WinXPsp2 Over the last year or so my USB ports have stopped working one by one. I have one in the front and like 5 on back and I am now down to 1 working port which I now have a powered hub connected to so that I can use my USB devices (Flightstick, MOMO racing wheel, digital camera) Is this a sign that my mobo is going bad or what I should check? I have checked in the properties of the USB controllers and the computer says that they are all working fine. I have even gone onto HP help forums and followed their advice about deleting the controllers and letting XP reinstall them in safe mode. Any ideas/suggestions would me greatly appreciated.