CUDA 9.0 installation: required files are missing on windows 7 (x64)

i’m trying to install “CUDA 9.0” on my “Geforce GTX 850M” with 388.13 driver.
i have latest “microsoft visual c++ 2017 redistributable 14.11.25325.0” installed on my win7(x64). but an error occurs EVERY TIME saying that some reauired files are missing!! any help?

LOG.RunDll32.EXE.log (127 KB)
LOG.setup.exe.log (3.46 MB)

The redistributables alone are not enough. You are expected to have a proper install of MS VS.