Was using the internet on,wireless last night and it worked fine. This morning I tried turning it on and I got the error triangle at the bottom of the screen. I have tried resetting the router. I also tried allowing access to all internet traffic by disabling my firewall. I am using macafee. My mobile phone is working off the wireless. What do you think is wrong.i am also scanning for viruses.
Can you try to connect to your router and select wireless settings | wireless connection setup wizard and try to run it and see if a wireless connection appears.
If not, can you tell the model of your wireless router? Check for firmware upgrades.