Details
A few weeks ago, my laptop was infected by a virus (a trojan I think) which messed up my internet. Firefox (the program I was using at the time, which is now uninstalled) & Internet Explorer 8 refuse to load up any webpages. However, my A.V programs,
Avast 4.8,
Malwares Anti-Bytes,
Spybot Search & Destroy,
can still update properly. E-mail & Lime-wire can also still connect.
Have run antivirus scans multiple times since in normal & safe modes, with & without my LAN cable connected. Avast found several trojans when scanning & it said they had been successful dealt with. Have since installed Super Antispyware & Spyware Doctor. The former comes up clean but the latter says my laptop still has a trojan. Not sure whether it's correct though as you have to buy the software to remove viruses.
Summary
Web browsers no longer work
Most other programs requiring net connection do
4 free A.V products currently find no viruses
1 free scan but pay to remove program finds 1 trojan
Any help would be highly appreciated.