Cannot connect to the internet (windows 7 laptop)

Hi, I'm trying to fix my sisters laptop, which just wont connect to the Internet. I've checked everything I can find, nothing helps, so really need some additional advice please.

Here's a description of the problem -

When looking at the icon in the system tray that shows the connection bars, when I hover over it, it says "not connected - connections are available" . On the related pop-up window It does show my wireless connection. When trying to connect to that wireless network, it eventually says "the connection was unsuccessful - this computer has limited connectivity to "bthomehub.....".

At this point it gives an option to troubleshoot, when i select this it says -
"problems found - there might be a problem with the driver for the wireless network connection adapter"

if I look at the troubleshooting report from this window it says "windows couldn't automatically bind the IP protocol stack to the network adapter"

In 'network and sharing centre' it shows the computer being connected to the homehub, but no connection from homehub to the Internet .

Attempted to ping ebay, got this response - "ping request could not find host ww w.ebay.com please check then name and try again."


under wireless connection status it says -
"ipv4 connectivity - no Internet access"
"ipv6 connectivity - no network access"


From looking around on the internet I have tried the following -
netsh winsock reset catalog
netsh int ip reset reset.log
reinstalled drivers for wireless network connection adapter
checked that windows has no restore points
tried ipconfig /release at command prompt, got the error "the operation failed as no adapter is in the state permissable for this operation"
tried ipconfig /renew at command prompt, got the error "the operation failed as no adapter is in the state permissible for this operation"


I tried removing various antivirus/system protection apps...at this point i then got a yellow icon over the connection bars in the system tray, and it now says im 'connected'. but it says 'no internet access' .


This is my ipconfig /all result -

Microsoft Windows [Version 6.1.7600]
Copyright © 2009 Microsoft Corporation. All rights reserved.

C:\Windows\system32>ipconfig /all

Windows IP Configuration

Host Name . . . . . . . . . . . . : Victoria
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : home

Wireless LAN adapter Wireless Network Connection:

Connection-specific DNS Suffix . : home
Description . . . . . . . . . . . : Atheros AR5B93 Wireless Network Adapter
Physical Address. . . . . . . . . : 70-F1-A1-27-65-E0
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IPv4 Address. . . . . . . . . . . : 192.168.1.66(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : 25 March 2011 20:59:44
Lease Expires . . . . . . . . . . : 26 March 2011 20:59:45
Default Gateway . . . . . . . . . : 192.168.1.254
DHCP Server . . . . . . . . . . . : 192.168.1.254
DNS Servers . . . . . . . . . . . : 192.168.1.254
NetBIOS over Tcpip. . . . . . . . : Enabled

Ethernet adapter Local Area Connection:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Atheros AR8132 PCI-E Fast Ethernet Contro
ller (NDIS 6.20)
Physical Address. . . . . . . . . : 70-5A-B6-42-68-38
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

Tunnel adapter isatap.home:

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

Tunnel adapter Teredo Tunneling Pseudo-Interface:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

C:\Windows\system32>ping 192.168.1.254

Pinging 192.168.1.254 with 32 bytes of data:
Reply from 192.168.1.254: bytes=32 time=5ms TTL=64
Reply from 192.168.1.254: bytes=32 time=1ms TTL=64
Reply from 192.168.1.254: bytes=32 time=1ms TTL=64
Reply from 192.168.1.254: bytes=32 time=1ms TTL=64

Ping statistics for 192.168.1.254:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 1ms, Maximum = 5ms, Average = 2ms

C:\Windows\system32>ping Yahoo!
Ping request could not find host Yahoo!. Please check the name and try ag
ain.

C:\Windows\system32>

Please help if you can think of anything, its a new laptop running windows 7, it did work fine for a while and then suddenly stopped working while connected to the internet.


Thanks in advance,
Joe