Can't connect to the internet anymore

I have an Acer Aspire 5315 which came installed with Vista :| . It has a program called Acer eNet Management, which has worked perfectly until today, I used to have o problem connecting to the wireless internet. Now it just displays No Wi-Fi Network detected. I could have switched of the Wi-Fi button by accident(although I doubt it), but if that would be the case i have no idea where it is. Please help

 

9 out of 10 wifi problems are associated with the manufacturer's frontend program like your eNet. Remove this from Windows, restart pc, go to Control Panel\Network and Sharing Center, set up a connection...