My Macbook Pro starts up in Safe Boot by default. How do I get out of it/How do I get my MBP to work normal again?

Question says it all.

What all started this was that I accidentally spilled a cup of Coffee onto my Keyboard. I instantly dried it with tissues and shut it off. A couple of hours later I was unable to log in. I started the MBP and it started up in Safe Mode (without me initiating it), I was unable to log in. I could enter the password and everything but it kept saying that it was the wrong one. I now got an USB keyboard and am able to log in and operate a couple of programmes, but i don't know how to get out of this Safe Mode again and how to start using my MBP normally again. I need it, have a couple of things that need to be done soon. Can I simply play a backup from my external HDD over it? There is a problem, that all the external Drives don't seem to work.

Help! I'm at my wit's end. Thank you!