As the topic says, do i lose my save games if i open the wii (pull out the battery) ? Are there other things i need to back up? I saw an topic a while ago stating that you can get trouble getting wii news or weather working again, is this true ? What do i have to do to not get that issue ? Is it easy for nintendo to see if i have opened my console ? If a problem accours later that is not my foult how likely is it that nintendo will refuse to replace it ?