OK, so it's not a virus, it's just a browser hijack. No biggie. But you should be running
malwarebytes in the background anyway, because: yikes!
You just have to get rid of it, one step at a time. First, go to control panel, programs and features. Is it listed there? if it is, uninstall it.
While you're in there, check for any new programs you've installed in the last couple weeks. If there's anything that looks at all dodgy, dump it!
Second, do you use any toolbars, in any of your browsers? Get rid of them... those things are evil.
Third: go into your settings, on each browser. Don't be tempted to skip one just because you don't use it. Change the search engine setting back to what you want, in each one. While you're in there, change the homepage setting too. Also, check your extensions. If anything looks suspicious, disable it.
Has malwarebytes finished running? Quarantine whatever it tells you to. With extreme prejudice!
It will probably want you to reboot. Starting fresh is always a nice idea.
There's a guide here:
http://support.kaspersky.com/us/viru...s/10319#block2
Are you back up now? Good! Any improvement? Let's hope so. If it's not completely gone, go here:
http://www.bleepingcomputer.com/download/adwcleaner/
Download the cleaner. Don't worry, it's got like 300,000 downloads this week alone. Run the cleaner. Usually, while I'm at bleeping computer, I also download the latest version of their combo fix. There's a link on the right side of the page. Sometimes I even download and run the latest version of their junkware removal tool. All three are safe and effective.
Let us know how it works out!
Best,
Bill