Hi
Have you tried opening it up?
Here’s a disassembly guide
If you open it up pay close attention to the speaker area
Make sure there isn’t anything stuck in the driver (also don’t touch it as they are very easily damaged)
Make sure the driver isn’t dented at all
Also make sure the connectors are seated correctly
Unfortunately there isn’t a guide for disassembling the laptop ,sorry about that
Here’s one for a similar model though
[link|https://m.youtube.com/watch?v=qry5zvPcV2Q|https://m.youtube.com/watch?v=qry5zvPcV2Q|new_window=true]
Hopefully this helps
Any questions please ask
Thanks:-)