Please help. My audio has been working fine for the past 8 years. I am the original owner of this car. This morning, I took my son to school. I turned off the car outside of school and walked him to the door. When I got back in the car, all of my audio was static. No AM or FM stations come in. The CD just plays static, as well. I turned off the audio and turned it back on. I turned off the car and turned it back on but I still just have static. Any thoughts on what's wrong and how to fix it?

THANK YOU!!!!