Hi, did u try to turn it on after u spilled milk on ur laptop? Because that will kill ur components. If u did try to smell any strange smell, any smell like fused electric item. If didnt try to turn it on ur lucky or could be, take the laptop to a pc shop or let it be untouched for 2 weeks and then turn it on to check.
The milk must be cleaned off regardless if the op does it himself or a shop does it.