Fix issue with my Linux Mint laptop

Every once and a while my Lenovo T420 laptop has an issue with linx mint when it starts up. The sound output is listed as "dummy output" instead of the speakers that I have with the laptop (or headphones). I would like some help fixing this project, as it has been difficult to find a solution looking through the linux mint forums. I disabled pulseaudio and enabled it back in, I reinstalled both alsa and pulseaudio, but this was no good.