If you ask entrepreneurs why they have founded their companies, you will be likely to receive answers like: "I wanted to make the world a better place." but even more often, the answer will be "I saw a problem and found a solution to it." And this is what it is all about. Entrepreneurship, at its core, is about solving problems.
In your problem slide, you talk about the problem you are trying to solve and why this is relevant to the masses. A common way to explain the problem you encountered is to tell a short story about a real person that experienced the problem and why the person needs a solution to it. If you had the problem yourself, tell the story from your perspective.
It's all about getting your audience to feel the problem. You know it worked when you see the investors nodding their heads in agreement. It is essential to get the investors emotionally attached to your story. If you can establish an emotional connection, they are more likely to feel connected to you and your idea.
At this point in your pitch, you should always remember that investors are not your enemies. They want to finance ideas that solve real problems and work together with you towards a solution. So get them into your boat - it will help you a lot during the rest of the pitch!
If you are not solving a new problem, but change something about a former solution for an old problem, you may want to present the opportunity slide instead of the problem slide.