Member Avatar for Alifarman

When i connect my pc with internet, it shows no internet access and its give the message that adaptor not found, i enable the adapter, but it will not connect with the net, and shows the same message. But with other network it can be connected. My system is Dell Core i5, window 7.

Edited by Alifarman because: addition
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The symptom you describe (works on some networks but not a particular AP) has already prompted good suggestions from , and . Below are Windows-side diagnostics and concrete steps not yet posted here, focused on driver/service-level failures and routing conflicts that can produce the “adapter not found / no internet” behavior on one SSID while other SSIDs work.

First checks (hardware and driver)

  • Verify the laptop wireless radio is actually on (physical switch or Fn key).
  • Open Device Manager, expand Network adapters, enable View -> Show hidden devices and look for duplicate or ghost wireless entries. Uninstall the wireless adapter device and choose to remove driver software, then reboot so Windows reinstalls. If problems persist, download the vendor driver for your Dell service tag and try that or roll back a recent update.

Services, power and adapter settings

  • Confirm the WLAN AutoConfig (wlansvc) service is running and set to Automatic (Win+R -> services.msc).
  • In Device Manager -> adapter -> Power Management, uncheck “Allow the computer to turn off this device to save power.”
  • In the adapter Advanced tab, test forcing the adapter to a different 802.11 mode (b/g/n) if available.

Network stack and diagnostics
Run these from an elevated command prompt to reset common Windows networking state:

ipconfig /all
ipconfig /release
ipconfig /renew
ipconfig /flushdns
netsh winsock reset
netsh int ip reset

If you still get a 169.254.x.x address or no DHCP lease, check the router DHCP table. Also check Event Viewer -> Windows Logs -> System for wlansvc or TCP/IP warnings, and temporarily disable any VPN/virtual adapters to rule out metric/route conflicts.

If all Windows checks fail, verify the router’s DHCP, MAC-filtering or firmware, and test the laptop on that AP with a Linux live USB to confirm whether the issue is Windows-only.

Recommended Answers

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Member Avatar for Reverend Jim

Is it possible you have the wrong encryption settings for tis particular wireless connection? It's possible that one end is set to WEP and the other to WPA. Are you being prompted for a network key when you try to connect?

Member Avatar for Oxiegen

Try removing the WiFi connection on your computer and re-discover it.
That has helped me many times, even if the connection worked the day before. :)

Member Avatar for Dedra

If you are using internet connection through Wifi and an open connection without security, then it might be the configuration settings in the wifi router which is blocking your internet. If you have a security password kept, then you might have a wrong one typed there.

Try to reconnect to the Wifi and it should work. There is nothing with the hardware model for the internet connection to work.

SNIP

Edited by happygeek because: advert deleted
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