Whenever you are unable to get the sound on lenovo computer. please install the earphone or speakers into your laptop. and then try to play something. [link|https://www.askprob.com/no-audio-output-device-installed/|lenovo laptop internal speakers not working but headphones are], please make these changes into your computer.
# Please make sure the driver for internal speakers are properly installed. if not, install the audio driver again.
# update the audio driver.
# Check the speakers wire. may be they are not attached on the motherboard properly.
# Update the windows too.
# Reset the computer.
After that if [link|https://www.askprob.com/lenovo-laptop-no-sound-problem/|lenovo laptop has no sound], you need to visit the lenovo store for more help.