I made the mistake of installing a couple free video editing programs and this malicious search engine or toolbar or whatever it is, called mysearchresults.com starting to automatically show up in my IE, Chrome and firefox. I uninstalled firefox and reinstalled again and from firefox it is gone but although i did the same to chrome it is still there. And from the chrome options i can not get rid of it as it even managed to change the settings and options stuff for chrome.

How can I get rid of this unwanted toolbar and search engine that frustrates me so much. Please help me to get rid of this.

note: it also caused my desktop background to set to defult for some reason. when i turned my pc off and on i mean...