My m keys is not working for acer aspire laptop

[savagelyloved]

Hello,
Pleases help me...my 6 year old just spilled milk on the keyboard of my laptop...I have an Acer aspire 5551...i quickly wiped it off now my keys are out of whack...please help...I need my computer for class in the morning...

 

[ss202sl]

Plug in a usb keyboard.