A modest quantity of alcohol accidentally fell, because of the cat ,on the keyboard.For the first 3 -4 hours it worked then gradually some time no longer worked, but now also adding an external keyboard does not go anymore maybe because it doesn't red drivers. Comes a black screen and white lettering windows Seven that does not allow you to do anything that even access the desktop at the moment! I'm very angry because the pc is very new...... help me please , how can I solve the question?