The common problem that iPhone users may face problem after upgrading their operating system to Windows 7 is that the iPhone does not synchronise with Windows 7. As a result, iPhone does not synchronise with iTunes. This is mainly due to an irritating error known as 0xE8000065 error. This problem, basically, arises in Intel P55 chipset systems.
Well, as it is a very common problem, it can be solved easily. Due to this error, iTunes is not able to connect with your iPhone. Moreover, the phone connects seamlessly but does not synchronize.