go to windows update, see if they have new drivers. check the audio control panel (right click on the speaker icon in the lower right), check volumes and check playback devices to make sure it's not routed to your digital output or something, go to speaker config and make sure it's setup correctly (some audio drivers/cards can switch the mic/line in and stereo out into 5.1 outputs, which might be an issue, but i doubt it).
as usual, google is your friend (more/different fixes):
Here’s how to fix sound drivers issues on Windows 10 Build 10130
No Sound after Build 10049 Update - Windows 10 Forums
it's not just you.