Windows 7 SP1 can not be installed 100% how to do

1, why install Windows 7 SP1 official version when prompted "The system is missing the necessary components", and can not be installed?
2, why install Windows 7 SP1 official version When prompted "System can not find the specified path"??
3, why after installing Windows7 SP1 restarted "Configuration error" and other issues (can not configure SP installation failed. Error code: 0x80070002. ERROR_FILE_NOT_FOUND (system Can't find the specified file?)
In fact, since the release of the official version of Win7 SP1, the software company has been troubleshooting the root cause of these problems and is also looking for a good solution.
There is a problem Root, and use Win7 optimization master, Rubik's cube and other software to clean up the "system-driven backup", this has a relationship, through the January 16th Sunday full-day troubleshooting, and C:WindowsSystem32DriverStoreFileRepository this folder under the atiilhag.inf_amd64_neutral_0a660e899f5038a2, Atiriol6.inf_amd64_neutral_bde34ad5722cca75 and other folders have a relationship, delete These folders will make Win7 SP1 prompt when installing "The system is missing the necessary components". At the same time, because the recovery of these two files will also result in the system can not find the specified path & rdquo; The only way to recover those backup files is by manual recovery. Because it involves file permissions and 32-bit, 64-bit system problems, it is more complicated to repair the primary users. Therefore, we recommend everyone to use another one in today's article. A method that does not reinstall the system and retains all installed software and configuration —— that is, use the Win7 CD to repair the system.