This program can’t start because MSVCR100.dll is missing from your computer
Got this error when trying the windows performance test. Found solution here
delete MSVCR100.dll from windows/system32/
download
http://www.microsoft.com/en-us/download/details.aspx?id=5555
and
http://www.ascentive.com/support/new/libraryfiles.exe
Edit:
That did not actually work for me so I just downloaded the dll file and copied it to the folder directly:
http://www.dll-files.com/dllindex/dll-files.shtml?msvcr100