What to do with error message "Windows Server Appfabric is not correctly configured. your should uninstall Windows Server Appfabric and reinstall it using the SharePoint Products preparation Tool"

When I tried installing SharePoint Server 2013 I retrieve a error message.

"Windows Server Appfabric is not correctly configured. your should uninstall Windows Server Appfabric and reinstall it using the SharePoint Products preparation Tool"

In this situation I didn't know what to do and then I downloaded and installed "Windows Server Appfabric" (http://www.microsoft.com/en-us/download/details.aspx?id=17616) and "Cumulative Update package 1 " (http://support.microsoft.com/kb/2671763/sv)

Again I tried installing SharePoint server 2013, same error message occur.

- What should I do?

- What is "SharePoint Products preparation Tool" Where can I retrieve it?