2

Today in the afternoon I started experiencing a strange problem with wifi connection on my laptop (in the morning it was still working fine). The problem is that I am not able to connect to internet via wifi, but connecting directly via cable works fine.

==================================================================================

I have checked whether the problem appears also on my Ubuntu system that I have installed on the same laptop, which worked without problems, so I think that the wifi card in my computer is OK and that the settings on my router are fine too. Also, I get no problems when connecting from my Android phone or form any other laptop/device that I have at home, so I suspect that the problem is somewhere in my Windows configuration...

I have tried rebooting several times, then I tried reinstalling my wifi adapter driver (as suggested at Can't connect to Internet through WiFi, but can with cable and I've got my new driver from https://www.atheros.cz/getfile.php) and I have also tried restoring Windows to some previous configuration (as suggested in one of the comments under that question), but none of this really helped me.

I have also reviewed Event Viewer on Windows where I found several errors (mostly from today, but also several moths old) of type 1001 and 1002 like this:

Your computer was not assigned an address from the network (by the DHCP Server) for the Network Card with network address 0x5CAC4C7763F2. The following error occurred: 0x79. Your computer will continue to try and obtain an address on its own from the network address (DHCP) server.

The IP address lease 10.0.0.51 for the Network Card with network address 0x5CAC4C7763F2 has been denied by the DHCP server 192.168.1.1 (The DHCP Server sent a DHCPNACK message).

But I am not sure whether these relate to my wifi connection problems...

==================================================================================

One thing I noticed though is, that when I boot my computer after shutdown, the wifi won't obviously connect, but then when I turn the wireless adapter off (from Network and Sharing Center/Change adapter settings), then wait until my laptop connects to internet via cable and then turn the wireless adapter back on, I am able to get the connection. However I consider this only as a temporary workaround, since I can't drag the UTP cable with me everywhere I go ...

Does anybody have any suggestions on how to fix this problem ?

================================================================================== My configuration:
Wifi Card: Atheros AR5B97 Wireless Network Adapter
OS: Windows 7 64-bit
laptop: Acer Aspire Timelinex 5820tg

Improve this question
2
  • You have a corrupted wireless profile for the network card or for your network specifically. To differentiate, are you able to see other wireless networks?
    – K7AAY
    Commented Sep 23, 2014 at 20:33
  • 1
    Yes, when I click on the wifi icon in the system tray (next to the clock), I can see several other wifi networks. I also tried to connect to some that were unsecured, but I got problems too... Also one thing I forgot to mention is that after I turn on my wireless adapter, I can see my home network, but after some time or an attempt to connect to it, it disappears...
    – jcxz
    Commented Sep 23, 2014 at 20:38

1 Answer 1

Reset to default
1

Since you can see other networks, it's not the card itself or its driver, so the wireless profile itself is busted. Change the name of your wireless network and attach to the new name, or delete the old profile (which has a lower success rate than the renaming procedure due to quirks of Windows, happy, happy, joy, joy).

Improve this answer
6
  • 1
    I am not sure, that I did what you meant, but I went to my router settings and changed the SSID of my network to something else, which did not work, so changed it back to what it was and now it works :D Anyways thank you very much !
    – jcxz
    Commented Sep 23, 2014 at 21:10
  • So finally, it turned out that this fix was only temporary for me and when I turned my computer on the next day, the problem was back. What really seemed to help me (I am good for over a day now) was to manually reset the router (with that special reset button at the back of the router box) and setup a completely new wifi network.
    – jcxz
    Commented Sep 25, 2014 at 11:45
  • Which router model and version? Routers can often be radically improved by replacing their software with Tomato, DD-WRT, or other open source firmware, as the level of testing for an $80 consumer device is very light. Did consumer telephone support for two and a half yrs and so many problems were caused by router software...
    – K7AAY
    Commented Sep 25, 2014 at 16:42
  • On the box it says technicolor TC7200.U
    – jcxz
    Commented Sep 25, 2014 at 17:05
  • Sadly, not compatible with OpenSource DD-WRT or Tomato . Little information available beyond what I could see at google.com/search?q=technicolor+TC7200
    – K7AAY
    Commented Sep 25, 2014 at 17:43

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .