I have a bluetooth dongle that works fine because I tested it in another pc but on one pc it did work before using windows own bluetooth software. Then I installed bluesolie which replace windows 7 own bluetooth software. I wanted the windows own bluetooth software back so I uninstalled it and it came back but this time it was very slow to load bluetooth lists or bluetooth options. and when i click on devices and printer it takes very long time to load all devices. Everything else is fast for example google chorme is fine.