anyone have tried to send something by bluethoot on PC??

months ago i send pictures and videos and other files by bluethoot to my Windows 7 PC..
now if i try share something by bluethoot my stupid PC dosent appear in the list!!
And if i send something by PC's Bluethoot to my N9, nothing happen and error occur; i see that bluethoot driver for my N9 there isn't! But i dont understand why it worked long time ago.

anyone have trouble with bluethoot connection===????