Recently ,some iphone users find out that iphone could not be abel to synchronize with pc under window 7 operating system ,the major reasom comes from intel P55Express chipset ,If users with the Intel P55Express chipset install window 7 operating system ,Iphone cannot be achieved with the pc sync and give error "error oxE8000065".it is not the problems of windows 7,but the P55Express chipset.how to sovle this problem?there are many methods ,you can change your CPU.But it looks expensive ,the wise choice maybe using some sync softwares .like iphone transfer ,iphone sync. etc.and you can also change other operating system.