braked hard yesterday n today n the hand brake light and ps light came on why?

What is your question?

I was going to fast and needed to turn I guess I braked to hard but then all of a sudden my hand brake light and ps light came on and I couldn't steer or stop. Luckily I was able to get to the side of the road and just rolled until I stopped. I turned the car on and it came right back on with no problems. It's fine it 3 times in the 1 1/2 I've had the car. Idk if braking hard is causing the problem or if something else is wrong. Can someone help me please?