I bought mobile broadband stick K3765 Huawei. Everything worked properly. After about a week my PC stop recognised another USB devices like a webcam or mobile. I spend many hours until now and still don't know what's wrong? When mobile broadband stick is plugged to PC I CANT using another USB devices and on screen shows information "windows cannot recognised USB device". But when I remove broadband stick and plug in webcam to PC again - automatically computer installing drivers and webcam start working. The problem is when I plug mobile broadband stick back - "there is no webcam connected to PC" !!!
Without mobile broadband stick I can use webcam and connect mobile to PC. With mobile broadband stick - computer don't see ANY other USB devices.
Any solution? Please?
The likely explanation is that the other USB device you're using is being confused with the mobile broadband stick. You might be able to clear this by going to control panel > phone and modem options and clearing out all of the entries for USB devices listed there. In addition, changing the COM port the PC assigns to the device might help also.