hone requires two important pieces of software to operate properly on Windows. First, the driver must be installed; for iPhone the driver is USBAAPL.SYS. Second, Apple Mobile Device Support must be installed as a Windows Service. If these are not installed, see the Reinstall iTunes section below.
Verify that the driver is installed by connecting iPhone to the computer and following these steps:
1. On the Start menu, click Run. (For Windows Vista and Windows 7, click the Windows Start button and click inside the Start Search field to place the cursor there.)
2. Type devmgmt.msc and click OK. A list of devices will be displayed.
3. Scroll down to Universal Serial Bus controllers and click the small plus sign to expand this group. iPhone will be listed as either Apple iPhone or Apple Mobile Device depending on the version of the driver installed.
4. Right-click Apple iPhone (or Apple Mobile Device) and choose Properties from the shortcut menu.
5. When the Properties window opens, select the Driver tab.
6. Click Driver Details to view more information.