Looks like your eclipse cannot find a proper JRE. Make sure you have JRE or JDK installed and JAVA_HOME
environment variable is set to a valid JRE installation path. Also note that 32-bit Eclipse will only work with 32-bit JRE and same applies to 64-bit version.
If nothing works you can point Eclipse to JRE manually by editing eclipse.ini
file. See this article for details.