Why does computer disappear on 360 and ps3?

im trying to play media from my laptop on my 360 and ps3, it worked the other night and now it dosent and i havent changed any settings, this happens every so often, like it will be there then next day it disappears and when i search it says cant find media extender, and yes i have allowed both consoles in windows media player, i have vista and norton inet security with netgear wireless router, btw i connect wirelessly to internet on both consoles with no hasstle

Why does computer disappear on 360 and ps3?bmw

See if this works:

1. Make sure your laptop has an active wireless internet connection.

2. Attach your two cables like this:

2a. One cable from your laptop's Ethernet port

2b. One cable from your Xbox 360's Ethernet port

3. Using Windows Vista (it's similar if you have XP), open Control Panel --%26gt; Network Connections. You should see an Unidentified Network (the Xbox 360) and a Wireless Network Connection (your wireless router), both of which are connected.

4. Bridge the two connections by selecting them both, right-clicking on one, and clicking Bridge Connections.

5. Windows will create a network bridge that will allow your 360 to use your laptop's wireless connection.

6. Test your connection from the System tab --%26gt; Network settings in your 360.

7. If this doesn't work, select the "Restore to Factory Defaults" from the System --%26gt; Network settings tab; this will remove previous settings and should allow for your new network to work.

8. Test your connection again and you should be on