Why is no sound working on my laptop?

It used to work a few days ago until I found out my microphone was not working, so I used an app to update all drivers. Suddenly, my sound and microphone doesn't work, however the driver is installed. I messed around with it but no solution. My only solution is to use the headphone jack my my second monitor (yes with a laptop xD) but it gives a really annoying static noise. I also tried headphone plugging into the laptop headphone jack but it still doesn't work, it only works if I plug it into my second monitor. I tried re installing my sound drivers but no luck, tried updating, no luck. If I reset my PC, will all my drivers be automatically installed, and would my sound and microphone work if I did this?