Sometimes Windows fails to install the correct USB drivers for communications with Android phones. If you have
problems, please try the following: Cleanup drivers- Download USBDeview from here.
- Extract the downloaded zip file.
- While the phone is
still plugged in, open USBDeview and sort by manufacturer.
- Find all the
HTC drivers and delete them.
- Unplug the phone from the USB cable and plug it back in.
- The
correct drivers should either install automatically or prompt you to install a driver.
Install drivers- Download the latest drivers from here.
- Unzip usb_driver.zip and specify the extracted location in the install driver dialog.
Confirm drivers- Run the Internet Sharer Wizard or
- Go to
Devices (Device Manager for older versions of Windows) then click on the "Android Phone".
- Click on the
Hardware tab, and check the list of drivers for ADB Interface under
Type.
If you still have problems (and you are feeling patient) you might like to read through this page for some ideas. | 
