Maybe a BIOS update could resolve some of your issues but I doubt it. If you have never done a BIOS flash maybe find someone experienced to help you, you can brick your board if done wrong. If the issue just appeared out of nowhere it may be pointing to a hardware failure or overheating. check for a bad case fan or plugged vents, do you have airflow directed across your VRM. use HW monitor to check your voltages to see if your power supply is healthy. If it is failing it could cause issues. Just trying to give you some ideas to check