You post is a bit muddled and I had to read it a few times to get the gist.

But it seems this system has multiple problems.

1] Search provider. Is this your browser's search provider, and if so, is this IE? If yes to both I would "Reset" IE back to default and start again. You can do that in IE > Tools > Internet Options, then the Advanced tab.

But the others do not seem related. What is this 'settings.ini' and where are you seeing this message?

I would start by doing a complete anti-malware check. Anti-virus is not sufficent, so follow Grif's advice to the letter in his post below;
http://forums.cnet.com/7726-19411_102-5128854.html?tag=posts;msg5128854

Mark