I am having an hp laptop.Having my wifi turned on i am showing connected to the internet but on the bottom right corner of the laptop it is showing 'no internet access' and as a result i am unable to open any web page.
Try going to control panel, internet options, connections, the LAN settings and see if you're connecting to a proxy server, if so uncheck it and try......if it was a proxy server, will want to check for malware/virus