Win7 restarts the service solution

After entering win7 today, I want to update the system. Who knows that clicking "automatic update" appears: windows update cannot check the update at present, because the service is not running, you may You need to restart your computer. depressed! First look at the update corresponding service: Computer---------------------------------------------------- So clicked "restart" to restart the service, but still did not solve the problem. I am wandering on the Internet, finally found here http://zhidao.baidu.com/question/398896728.html Solution: Open the command prompt window as an administrator and run the following command: net stop WuAuServ cd %windir% ren SoftwareDistribution SDold net start WuAuServ No need to restart, click Windows Update, OK! The reason why this problem occurs, I guess it should be a few days ago to clean up the C drive, accidentally deleted the SoftwareDistribution folder file.