[Diamond Lie]

Windows defender will not find this error most likely, as it sounds like you have been infected with some sort of trojan.

There is nothing abnormal in your task manager or in the startup within msconfig, unfortunately. So its not something that most likely has a simple solution.

First off, you do not want to use Internet Explorer unless its absolutely necessary. Always use Mozilla Firefox, it prevents from a lot of unnecessary spyware infecting your computer, and just a better browser in general.

If you don't want to reformat your computer (which, if your system files have been compromised, you most likely should) you need to go here:

housecall.trendmicro.com

The scan is excellent and picks up trojans and a lot of things that other programs are incapable of recognizing.

I'm looking into it further but you should really scan using that site, it has helped me on numerous occasions in the past.