Which factor can hinder problem solving?

A factor that can hinder problem solving is not having problem solving skills.

Explanation:

If you're unaware of choices or steps towards problem solving it can be very hard to find a solution.

Conceptual blocks.

Explanation:

During problem solving, conceptual blocks can make it difficult to generate creative ideas and logical reasoning to solve problems, since many conventional concepts or paradigms are formed in our own reasoning and we cannot get rid of them. In other words, we can say that conceptual blocks are barriers that imply logical reasoning, keeping us trapped in an irrelevant and unproductive thinking pattern that does not allow the solution of the problem to be visualized.