web browser opening randomly

hey all! I've been having some troubles with my PC and wondering if someone on here could help me out!? So lately my google chrome has been opening randomly, multiple times, and its really annoying! It will even do it when I am in games and it would minimize my game every time it did it. So I thought it was a virus and I completely formatted my computer, and it still seems to be doing this same thing. It is doing it on google chrome and internet explorer. It does not matter which browser I am using, it just does it to what ever one I have set as default. I have a Alienware Aurora R4 desktop with Windows 7 Home Premium 64-bit.

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