On each cluster node, uninstall the HDP 1.3 for Windows packages.
From the command-line:
> msiexec /lv D:\MSI_Download/hdp_uninstall.log /qn /x D:\MSI_Download\hdp-1.3.0.0.winpkg.msi HDP_LAYOUT=D:\MSI_Download\cluster.properties HDP_DIR=D:\hdp HDP=yes DESTROY_DATA=no
Or, if you prefer to use the Control Panel:
Go to Programs and Features-> Uninstall HDP 1.3 for Windows.
The uninstall option keeps existing data in place, maintaining the data directories for HDFS and MapReduce.