On another note, I HIGHLY RECOMMEND malwarebytes. Sounds like you probably have some kind of virus and whoever dropped it on your computer is trying to earn revenue by forcing ads on your computer.
http://www.malwarebytes.org/
It's free, and in my opinion better than all of the paid solutions I've used. There is a paid version but you shouldn't need it.
The free version of the software does everything the paid version does, the only difference is the paid version updates and scans your computer in real time, the free version you have to update and scan manually.
Basically the free version is great for fixing, the paid version is good for prevention AND fixing.
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