A few months ago I installed Norton Antivirus. Immediately after I started using it I started having issues. I would try to open programs, usualy Firefox, and it won't open. Sometimes absolutely nothing would open and i would only be left to switch off the computer and restart. My subscription expired to Norton so I took the opportunity to switch to another antivirus. I switched to AVG and immediately after doing so absolutely nothing was capable of connecting to the internet, except for IE. I completely uninstalled and removed AVG. Problem remains. I've also disabled the Windows Firewall and still IE is the only program able to connect to the internet. I cannot find anything that is preventing these programs from connecting.