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Dell laptop problem

My Dell vostro 2520, windows 8 OS has not been detecting wi-fi networks from the past few days. Also, it says the audio device has not been installed. The audio was working perfectly fine until a few days back.
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  1. Best answer
    May be the drivers got corrupted,
    try reinstalling audio and wi-fi drivers from dell support
    http://www.dell.com/support/my-support/us/en/19
  2. Did you do any Windows updates recently? in that case, Mohammad's suggestion of driver reinstallation is a good place to start.
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