Hi Paul,
Please take a look at SAP Note 1553465 Prerequisites for 720/721 EXT and higher kernels on Windows.
Each SAP kernel has program dependencies on the Microsoft C-runtime. Since the C-runtime is not part of the kernel, you have to install the relevant C-runtime before you start the SAP system. Otherwise, you will get an error message similar to this:
This application has failed to start because MSVCP100.dll was not found. Re-installing the application may fix this problem.
I would highly recommend applying the latest SAPSETUP 9.0 patch 36 as part of your solution.
Cheers,
Dan Mead