Laptop recently stopped playing audio itunes/tumblr and videos p

My laptop recently stopped playing audio itunes/tumblr and videos period on youtube. I've tried using some of the trouble shooting methods I've found on google like control panel>trouble shoot> hardware and sound> audio and cmd> sfc/scannow but they say nothing found. I tried right clicking the speaker>sound>speaker properties>enhancements>disable all enhancements. The only thing that works is restarting the computer. I'm not tech savvy enough to know what to do next, can anyone give me some advice?