I started with this HP dv2000 running Vista Premium 32 bit SP1 that seemed to be running just find except it would not accept a USB flash drive. It would recognize the Drive when it was plugged in but windows could not find drivers for it. Yes, I tried several USB drives with same results. I contacted HP and after dancing around with them for about 2 hours they had me uninstall all entries in Device manager under USB Controllers and then reboot to have Windows automatically reinstall these drivers. The computer cannot seem to find any drivers for anything and just keeps coming up with device found and then Windows couldnt find driver software for your device. So now I still cannot use any USB devices, under USB Controllers I have 4 Unknown devices that were listed as USB Root Hubs before.