Hi, new poster that found this site whilst looking for a solution. I have seen from the forum that this is quite a common problem but that the solution has to be tailored to an individual computer.
The computer is my parents and they asked me to take a look when it became slow. Microsoft Security Essentials was flagging up numerous viruses (Rovnix was one)but could not remove them and suggested use of windows defender -this did not get rid of the viruses and I had my doubts as to whether the microsoft security essentials was even genuine. So I gave up and decided to reformat and reinstall windows from a boot disk with their product key on the sticker on the back of their laptop.
I'm unsure where th bootdisk came from which may have caused the problems that are happening now. The viruses appear to be gone now - I have downloaded AVG (free version) and this finds no problems. However I have noticed that adverts by Ad choices are everywhere in both IE and Firefox Browsers plus the computer is slow when only browsing.
I have tried to locate malware using malwarebytes which finds nothing - I have checked the browsers for suspicious add ons/extensions and nothing can be found. I have looked throgh the registry for anything dodgy related to ad choices and have found nothing.
I need to stop these ads as I know my parents will click on them thinking their is an urgent issue to resolve and more viruses will be back (if they are even gone now.) removing these would presumably also speed up the computer - Although all they will ever use it for is browsing.
Many thanks for taking the time to read this especially if you can help.
Should have said
Windows 7 Home premium SP1
32 bit OS
Edited by bluemoontom, 09 December 2014 - 01:59 PM.