Install Singular 4-x-x on a Microsoft Windows Platform
1) install cygwin ( https://cygwin.com/setup-x86_64.exe) with default settings,
at "Cygwin setup - Select packages" change "View" to Full and "Search" to wget,
change in the row "wget" the column "New" from "Skip" to some version
and finish the installation
2) in the cygwin terminal:
wget ftp://jim.mathematik.uni-kl.de/repo/cygwin/64/build.tartar xf build.tar; bash build_cygwin
Now Singular can be started within the cygwin terminal as Singular.
Important Note: If you want to make use of the Singular command surfer, you will additionally have to download and install surfer-setup.exe, and make sure that the newly installed surfer.exe is included in the Windows environment variable Path.