Sorry if this is a common one, it is a strage issue since I have had this running on this machine before. I am using the v3 drivers (though have also tried older versions) Win 7 SP1 The computer complains that the drivers are unsigned and will not allow the drivers to be used, even if I select "install anyway" during installation when running the installer under admin. I have no "US 16x08 Mixing driver" drivers showing any more either. I have tried turning off driver signing on windows, strangely I have unsigned DMX drivers from Chromatec that have installed without issue. Whenever I uninstall the driver, windows automatically re-installs the faulty driver, even if I select "delete driver files from disk" during uninstall. I have tried every method I know to manually install the drivers however this is difficult as the drivers are wrapped in a .exe installer, so the only place to get them is from the system32 folder (I also can't manually delete the files from this folder even if I take ownership of them) My best thought is that windows has somehow managed to get a corrupt file as a driver, and just keeps reinstalling it. I was hoping someone may have had a similar experience and could give me some options. Cheers!