Will human race become extinct because of Artificial Intelligence?

Artificial Intelligence has been doubted as "beneficiary" since humans realized it can someday turn into a real and serious threat to human race. Can smart machines, objects, humans turned into God-like cyborg transform into dangerous threat towards humans worldwide? Is it even thinkable that human race can come to an end because we ourselves were able to create machines smarter and much more powerful than us that can one day make us become extinct? "It's our responsibility to think about all of the consequences good and bad. We've had the same debate about atomic power and nanotechnology. With any powerful technology there's always the dialogue about how do you use it deliver the most benefit and how it can be used to deliver the most harm," Professor Hawking has recently said for BBC.