itunes安装不了怎么办

itnues安装不了，安装过程中显示：Service' Apple Mobile Device'(Apple Mobile Dervice)failed to start.Verify that you have sufficient privileges to start system services.然后我按了忽略的按键，安装好后就没办法打开了。显示：itunes was not installed correctly.please reinstall itunes.error 7 (windows error 193)求解决方法！