Hi Ritzi,
1. You can perform system restore. Restore the system to the date it was working fine. Below link will help you perform System restore:
http://windows.microsoft.com/en-US/windows7/System-Restore-frequently-asked-questions
2. If that does not resolve you may try reconnecting the network to XBOX and check if it helps. You may follow the below steps:
First Navigate to: Start > Network > Network and Sharing Center > Manage Network Connections.
Now that you are in network connections make sure that there are only two icons in here that being
1. Wireless
2. Local Area Connection,
These are the only two connections that should be there
Now go into the properties of the wireless connection and make sure you have unchecked “allow other network users to connect thought this computers Internet connection” Uncheck the box and click OK
Now reboot the computer
When you are up and running again navigate back to:
Start > Network > Network and Sharing Center > Manage Network Connections.
Enable Local area connection if it’s not all ready, go to the properties and double click “Internet Protocol Version 4 (TCP/IPv4)” with will open the properties, ensure that “Obtain an IP address automatically” and “Obtain DNS server address
automatically” are both checked click OK.
Now go to the properties of the wireless connection, on the sharing tab check both boxes and click OK.
go to the properties of the local area connection once again and open up 4 (TCP/IPv4) again and you should now see that’s its changed to
IP 192.168.0.1
subnet 255.255.255.0
default gateway -empty-
And that use the following DNS server addresses is now checked.
This should now allow you to connect to Xbox live with via the Ethernet cable from your laptop to your Xbox.
Link for reference: Xbox 360 Wireless Network Adapter does not work correctly:
http://support.microsoft.com/kb/907602
Xbox 360® Wireless N Networking Adapter: http://www.xbox.com/en-US/hardware/x/xbox360wirelessnnetadapter/
Here are some links you may refer to connect to internet using Ad hoc network in window 7:
http://windows.microsoft.com/fr-CH/windows-vista/Ad-hoc-networking-How-the-network-with-the-funny-name-can-make-your-life-easier
http://windows.microsoft.com/en-US/windows-vista/Set-up-a-computer-to-computer-ad-hoc-network
http://windows.microsoft.com/en-US/windows-vista/Using-ICS-Internet-Connection-Sharing
(Links holds good for windows 7)
http://msdn.microsoft.com/en-us/library/ms881891.aspx
Thanks and Regards:
Samhrutha G S - Microsoft Support.
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