My xbox boots into avalaunch fine then 2-3mins later freezes up completely and shuts it's self down and I know its not a internet problem.

Ihave no idea what versoin im running.
Im also noob.

Please HELP!!!!!

Sounds like hardware failure. Might be overheating. Break out the screwdrivers, take it apart and clean out the dust and make sure all your connections are good. Hardmod or softmod? If you have a chip then have a close look at the soldering.