The message that you are getting is because of the Microsoft C++, so I would suggest repairing the Microsoft C++ Redistributable 2013,2012 and 2010.
You can also check the article :Error: "Unable to start correctly (0Xc000007b)"
Please let us know if it helps.
Tried what you said but still no joy. I get a shortcut on my desktop to
lightroom but it wont open because MSVCR100.dll is missing. I know the
redistributable files are on my system . Three days I have been trying
to sort this out thoroughly fed up but thank you for trying to help much
This reinstalls Microsoft Visual C++ Redistributable 2012, which should resolve the issue. Make sure all applications are closed before installing it.
I have done this so many times and it still doesn't work but thanks for
have been unable to mark your answer but it did not work and I am
giving up trying so please do not communicate with me anymore thanks for