Wireless not working, but ethernet does

By sssstud
Aug 21, 2013
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  1. Hi guys ,I am facing the weirdest problem . when I m trying to connect my laptop using wifi , my modem get rebooted ..all light gets off (DSL,WLAN,Internet) automatically . is it any malware or what ? I have updated my BIOS , my wireless driver ..but nothing worked :( .nd when I m connecting using ethernet its working fine , modem working smoothly .
  2. Dell_BabitaG

    Dell_BabitaG Official Dell Support Posts: 58

    Hi Sssstud,

    Please let us know the message you see when you try to establish a wireless connection to the internet. Is your computer able to detect wireless networks? What version of Windows are you using and what is the model and name of the wireless router?

    Thanks and regards,
    Babita G

    For easy access to drivers, manuals and product updates, please visit our Support Site .
  3. jobeard

    jobeard TS Ambassador Posts: 11,796   +1,252

    Change router mtu to 1492

    this will stop packet fragmentation which then avoids the necessity of packet reassembly. Reassembly sometimes causes buffer overflow and soon crashes the device.
  4. tipstir

    tipstir TS Ambassador Posts: 2,646   +155

    Make sure the modem and router are rebooted. Or power cycle both. Turn off power wait 30 seconds then power on first the modem then wait 30 seconds then power on the router. If your using all-in-one modem with router then just power the one device on and off for 30 seconds.

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