I had a Trojan thingy on my old computer and I used Norton on that computer and was religiously obsessive about keeping my definitions as up to date as possible, but my anti-virus didn't pick up the problem until after the problem had already made a mess of my computer, and not until I ACTUALLY manually went into the folder that the infected file was located that the anti-virus picked it up. Of course by then it was too late, it had already wrecked chaos on my computer. My computer, both my old one and my new one do a full system scan no less than once a week, and it never picked it up. I lost faith in Norton because of this, and my new computer is running with McAfee programs. I haven't updated my Norton anti-virus definition in about three weeks because I haven't used that computer since then, but my new computer is as up to date as possible as everything gets downloaded whenever I get online, and if something new is available.
But what it did was move programs all over the place, deleted cursors and removed items from the drop down list you can get by right clicking and selecting new. Most noticeable was the removal of MSPaint from the computer all together and my computer not know what a .BMP file was, unless I opened it in a different program. I had to go into add/remove programs and add the programs again.
My homepage would always change to some god forsaken page and following the instructions on how to fix it did no good because whenever I restarted my machine everything I had just done was reversed back to what it had been before, and I have no idea how to get rid of the problem. My new computer has the same problem with IE with a constant changing of homepage, and nothing I do can fix it. My anti-virus picked up the problem this time as soon as it was started, and deleted the infected files, but it still managed to screw up my Internet Explorer and I have no idea how to repair it other than to erase the whole mess and reinstall. Also on my old computer I couldn't use some program that could use the internet to download content because whatever the hell had happened had changed the address the program had to go to, to access information, so it would stop responding. I just stopped using IE as it is and use the variant IE browser that my internet connection uses and nothing about that was changed, since everything that I do with it can be carried from machine to machine just by signing in, favorites and homepage. I would like to know how to correct or repair IE so that the homepage I set it to stay the current page and I don't have to reset it to default every time I go into the options, also to delete the stupid favorites it keeps putting in the favorites folder.
I don't read any email unless I know who it is from, and my internet service and my anti-virus both scan my emails for virus' when I open anything, or if the email is from a new service that I am signing up for that goes into my junk folder because my email is set to exclusive. I don't have a contact list on my computer, but I do have one in my email, but I don't think it is store locally on my computer, nor are my messenger contacts. If they are I have no idea where they are located.