Pls Help: how to delete this SCAM site http://iesafetywarning.com/

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Hi all! Anyone of you knows the site above? its a scam and a trap. They will tell u that ur pc is infected so u will buy their products. My only problem now is i can not take it out from my browser. Everytime i open my browser, this site will always appear overriding my homepage site. Anyone knows how to handle this? I want to take this out from my internet browser. I tried changing the homepage setting from internet options but it doesnt work. Computer geniuses please help me. Ty.