Get that PSU to a landfill site. It deserves to stay and rot there. Any cheap, generic brand will never be successful, especially when it uses a false label. Goto Newegg and find one by seasonic, corsair, antec or any brand on there that doesn't cost less than $30 / £18. They are brands that people trust, plus some of them are very good value and have the 80+ certified sticker on them.