Q: Car having multiple electrical problems

I seem to be having electrical problems in my car. Both the interior lights and the radio do not turn on. Plus, the front headlights started going out while driving, then the power steering and the whole car shut off. Randomly, the seatbelt light and the oil light would come on, even though they are okay. I had the battery replaced and all interior fuses checked and that didn’t help this problem. When turning on the battery, all of the needles go up to the max and then drop down before I can start the car. Also, the speedometer keeps resetting, instead of resetting every time I start it up. Please explain what I need to do to fix all of this.