My phone, a Samsung Jack, used to sync with windows mobile center, on my new windows 7 laptop. Two weeks later it stopped synchronizing with my computer. The USB connection is set as ‘active sync’ on my phone, and every time I connect my phone it now recognizes it as a ‘USB mass storage device.’ Windows Mobile Center won’t recognize my phone, or my phone isn’t showing itself as an active sync device. I have no idea what’s wrong or what to do. Why my phone doesn’t connect to Windows Mobile sync? How can I fix it? Please help. Thanks.