It's a Kernel Panic. Maybe you've choosen the wrong package configuration for your system at setup...

Try to boot up in Verbose Mode, using "-v" parameter maybe that will make it display a more detailed error message. Otherwise you can try to boot in Safemode, using "-x" this will skip a lot of drivers, what might make you able to access your system

For any detailed diagnostic on your problem you need to provide infos about your system & installer configuration.

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