A few days ago I was tryng to recharge my iphone on my W7 but kept getting a notice by the notification area saying device driver not installed. Why does it need to install it every time? Its never happened previously. Then this morning I was recharging it & I kept hearing the connect/disconnect sound. I opened up My Computer & watched as the iphone icon disappeared & reappeared. I finally pulled it out & plugged it into my laptop & no problem. But I ask again, why does it need to install a driver each time?