Hi!
Sound is OK with headphones, but not without such phones;
- With the headphones disconnected, press Windows + X > Device Manager > Check if there is an exclamation mark ⚠️ on any device.
Usually, sound problems are related to the sound drivers, but it could be that your laptop's speaker is damaged.
- Have you ever used the laptop's speaker?
- Did you buy this laptop recently? Is it a new product or second-hand goods?
- What is the manufacturer and model of the laptop?
- Press WINDOWS + R > Type "msinfo32" > In System Summary, send me a screenshot.
I await your response.