There could be several reasons for your computer to have no sound. It could be due to a malfunctioning audio driver, muted speakers, faulty speakers or headphones, or a damaged sound card.
To check if your audio driver is working properly, go to the Device Manager and expand the "Sound, video and game controllers" section. If there is a yellow exclamation mark or a red X next to your audio driver, it indicates a problem. You can then try updating or reinstalling the driver.
A distorted or crackling sound can be caused by outdated or corrupted audio drivers, damaged speakers or headphones, or interference from other electronic devices. It could also be due to a low-quality audio file or a problem with the audio settings.
If you are experiencing low volume on your computer, you can try adjusting the volume settings on your computer and speakers. You can also check if your audio drivers are up to date and try using a different audio file to see if the issue persists.
If you are unable to hear any sound from your headphones, make sure they are properly connected to your computer. You can also try testing them on another device to see if the problem lies with the headphones. If the issue persists, it could be due to a faulty audio jack or a problem with the headphones themselves.