[COLOR=#333333]I have to keep unplugging the RTL2838 USB from the computer then plug it back in the computer will recognize it usually for a short period when I have the Zadig app open which I have to change the USB driver sometimes this will work for a few hours most of the time as soon as the USB has been plugged back in it will immediately give a message that there is a unknown USB device. Are there any other options I dont know if its my older HP p7-1254 computer or if its the NooElec R820T2SDR&DVB-T usb any help would be appreciated