As you are saying some keys are working fine. Might possible it can be solved by dehydration process.
We use this process if any mobile gets wet. Put your laptop into dry rice for 2 days. Dry ice absorbs all your coffee moisture and it could be work fine.
You can try this.
- This reply was modified 2 weeks, 6 days ago by Yvonne Nymann Bruun-Schultz.