I purchased a HP DV9429us notebook 2007. I didn't use the computer very much. In 2010 the computer started not finding the wireless lan connection. Sometimes if you restarted it would work sometimes not. Finally nothing worked. When if didn't work, it would no even appear in the device manager. I changed the router, reinstalled software and changed setting nothing worked. I called HP customer service and learned the computer had a DEFECTIVE part when it was built, which HP knew would some day fail. My first thought was okay Hp... read full review »