Ok I know there are other threads to this topic but mine may be unique... My USB ports are not working in windows vista... BUT if I boot with the usb device connected it will be ok until I disconnect it... I tried all the registry fixes on the net that pertain to USB to no avail... and I can boot from USB with NO problems and the ports continue to work fine... it's HP Pavillion dV4... I'm convinced it's a windows issue... any ideas before I re-install?