Original post : System Restore did not complete successfully - Fix for Windows 7.
System Restore did not complete successfully. Your computer’s system files and settings were not changed. Details: System Restore could not access a file. This is probably because an anti-virus program is running on the computer. Temporarily disable your antivirus program and retry System Restore. An unspecified error occurred during System Restore. (0x80070005) You can try System Restore again and choose a different restore point. If you continue to see this error, you can try an advanced recovery method. For more information, see What is recovery? Run System Restore | Cancel
msconfig.exe
command prompt
sfc /scannow