Dell Inspiron 15 3000 Series Drivers Info
This is a notorious weak point on the Inspiron 15 3000. The wrong driver results in no sound from internal speakers, even if headphones work. Dell’s proprietary Waves MaxxAudio software is often bundled, and without it, audio quality drops significantly.
If you need a specific driver (like BIOS or Video), you can find it manually: Support for Inspiron 3000 | Drivers & Downloads | Dell US dell inspiron 15 3000 series drivers