As you mentioned that you are unable to browse, you may have to either download another browser and try using that e.g. Mozilla, Opera, Safari or you may have to use a friends PC to access the internet.
Once you are on the internet, please download the McAfee Stinger from HERE by clicking on Stinger v10.0.1.624
Once you have downloaded this file, save it to your desktop and double click on it. If you have downloaded the file onto a friends machine, then you may have to bring the file from the friends machine onto yours using a USB.
Once you have double clicked the file, before clicking on "Scan Now" , click on "Preferences" and under "Scan these targets" make sure both options are ticked. Under "On virus detection" select "Delete".
Also, under "Heuristic network check for suspicious files" there should be a drop down currently set to disabled. Change this to "Very High" and click OK. Then select "Scan Now".
Hope this helps.