Support Uncommon bootloop (video)

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http://androidforums.com – G'day, My gnex has started into a bootloop and I can't seem to fix it, any suggestions would be great. Stock (as far as I know) and it started doing this after I tried to install a youtube downloader. Any help someone can give is super helpful... I have already lost a year and a half's worth of pictures and contacts (Yea my own idiot fault for not backing up, ever)... but having to go and buy a new phone is a kick in the nuts I'm not quite prepared for yet. Thanks! (General)