System : Windows 7 Ultimate 64Bit. QC CPU 2.5Ghz, 4Gb RAM, Nvidia 9600GT. The modem work fine until about a month ago. I uninstalles the device, reinstalled it but the same mesages. I updated the driver as well as the software, still nothing. In safemode, the modem driver is loaded and the devicemanager reports that the device is working fine. once the system is started in normal mode the divcemanager reports : This device is not working properly because Windows cannot load the drivers required for this device. (Code 31). please help. I check the settings for 6to4 drivers and there is no problem.