Q9c Refuses to Sync

[XJoshua]

Ahhh I thought I loved my phone. Now I dont.

So specs:
-Phone
Sprint MotoQ9c
WM 6

-Computer
Vista Home Premo
3GB Ram
160GB Hdd

Problem:
Phone sync'd fine for the first three days. Now itll be recognized by windows, but the Sync Manager or Mobile Center will not show it as plugged in. I have uninstalled drivers, and reinstalled, same with the programs. Still nothing. All I can do is charge the Q9c, which is lame, because I have a wall charger for that.

Any idea's. And yes under USB I do have that one box unchecked on the phone.