If you don't specify the compiler, just issue "buildall.bat" from the command line, does it build successfully? The sample build files will attempt to locate the most recent compilers on your system, Intel compilers first, Microsoft compilers second.
Also, do the individual build scripts work, if you simply attempt to build one of the samples and not the entire batch? Some of them require additional components be present on your system, so not every sample will build properly from the buildall script. It's usually easier to work with one sample than to try and build everything.