Laptop not connecting to internet - please help

  livvi_77 11:39 16 Jul 2010
Locked

My laptop has been connecting to the internet fine all week and then yesterday it just stopped connecting. It usually just connects automatically. My wirelss finder is on and the wireless is working fine with the PC. It shows a strong signal from the router but wo0nt connect. Please help.

  onthelimit 14:47 16 Jul 2010

Is the wireless switched on? I've know people disable it accidentally with the function key or just knocking the switch (if there is one).

  onthelimit 14:48 16 Jul 2010

Sorry, just read your post properly - it's obviously not that!

  proudfoot 16:40 17 Jul 2010

Is your PC connecting wirelessly OK but not your laptop?
If so your problem may be solved by changing the wireless channel. I had this problem a few weeks ago and this did the trick

  livvi_77 16:55 17 Jul 2010

Yes the PC connects wirelessly but not my laptop. But my laptop has no problem connecting to other wireless networks. How do I change the wireless channel? Thanks.

  mgmcc 11:10 18 Jul 2010

Try deleting the current wireless 'profile' and then go through the procedure to "Connect" again.

If that doesn't help, Open a Command Prompt window ("Start > Run", type CMD and click OK) then, at the prompt, type...

ipconfig /all

...and press Enter. This will show details of all network adapters installed in the PC. Right click in the Command Prompt window, "Select All" and press Enter to copy the details to the clipboard. Paste the details into a forum reply here.

If you are unable to paste the details directly from the computer, because it cannot get online, paste them instead into a blank "Notepad" file, transfer the file to a working PC and copy/paste the details from there. It might just give a clue as to what the problem is.

  livvi_77 17:36 20 Jul 2010

Microsoft Windows [Version 6.0.6001]
Copyright (c) 2006 Microsoft Corporation. All rights reserved.

C:\Users\Olivia>ipconfig/all

Windows IP Configuration

Host Name . . . . . . . . . . . . : Olivia-PC
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Peer-Peer
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No

Wireless LAN adapter Wireless Network Connection:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . : airangel.com
Description . . . . . . . . . . . : Realtek RTL8187B Wireless 802.11b/g 54Mbp
s USB 2.0 Network Adapter
Physical Address. . . . . . . . . : 00-16-44-D7-D1-68
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

Ethernet adapter Local Area Connection:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . : vm.esol.dur.ac.uk
Description . . . . . . . . . . . : Marvell Yukon 88E8072 PCI-E Gigabit Ether
net Controller
Physical Address. . . . . . . . . : 00-1E-68-7A-0B-56
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

Tunnel adapter Local Area Connection* 6:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : isatap.airangel.com
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

Tunnel adapter Local Area Connection* 11:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
Physical Address. . . . . . . . . : 02-00-54-55-4E-01
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

Tunnel adapter Local Area Connection* 12:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : isatap.vm.esol.dur.ac.uk
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

Tunnel adapter Local Area Connection* 13:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : 6TO4 Adapter
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

Tunnel adapter Local Area Connection* 15:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : isatap.vm.esol.dur.ac.uk
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

C:\Users\Olivia>

  livvi_77 17:37 20 Jul 2010

Also have found out my sister's laptop is also not connecting to the wireless although the PC is connecting fine.

  mgmcc 09:12 21 Jul 2010

Unfortunately those details only show that neither network adapter ("wired" or "wireless") is connected to the router.

However, that fact that your sister's Laptop is now also not connecting could indicate a problem with the router, rather than the computers.

You could try performing a "hard reset" of the router back to factory default settings, but this would involve setting it all up again from scratch.

  Ashrich 22:57 24 Jul 2010

I see that you are trying to connect to an airangel connection at Durham University , maybe you'd better take it up with them .


Ashley

  mgmcc 08:39 25 Jul 2010

Just noticed in the IPCONFIG /ALL details that the Node Type is showing as "Peer-Peer" and this can cause network problems. To fix this you need to edit the registry.

Open the Registry Editor - "Start > Run", type REGEDIT and click OK.

Navigate to:

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Netbt\Parameters

and delete the two values "NodeType" and "DhcpNodeType" if they exist, forcing Windows to fall back to its default node type, which should be "Hybrid". Reboot the computer.

[I believe these instructions were originally for XP, but check if the two items exist anyway. Also as a precaution, in the left pane, right click the Parameters folder and select Export; this will backup the folder as a .reg file which you can later double click to return the folder exactly to its current state if there are problems.]

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