One perhaps useful analogy for super-intelligence going wrong is corporations.

We create corporations to serve our ends. They can do things we cannot do as individuals. But in subtle and not-so-subtle ways corporations can behave in very destructive ways. One example might be the way that they pursue profit at the cost of in some cases ruining people's lives, damaging the environment, corrupting the political process.

By analogy it seems plausible that super-intelligences may behave in a way that is against our interests.

It is not valid to assume that a super-intelligence will be smart enough to discern true human interests, or that it will be motivated to act on this knowledge.