Hello,
Please check on the lower right of your computer screen on the task bar if your sounds are muted. If the volume is at 100 and you still can’t hear anything check your speakers/headset if their own volume knob/adjuster is at 0 or has its own mute function.
If those are all lined up check your device manager, open the start menu and search device manager, look for Audio inputs and outputs and select the speaker/headset that isn’t working, right click the device and select properties, driver, then within the driver tab update the driver.
Hope this helps,
JC