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#11
As stated, Migrating software more then not causes problems, especially if it is from a different OS. Unless you are restoring a Clone from the same computer or model # we suggest doing a clean install and installing your programs.
To answer your question, go to Start/Search and type CMD, Right click the CMD results and Run As Administrator. In the Elevated Command Prompt type SFC /scannow and press enter. This will replace any missing system files.