Forgotten Password To Open My Netbook

I purchased an MSI netbook from Argos in London and I was very happy with it, until... I left it for a bit after using it for a month, and now, when I tried to open it (I had set up a password for the netbook itself), I found out that I had completely forgotten my Password!... This is a disaster for me! I am a university lecturer, known as Clara Armand, and I had to have a password, as at the university where I was working at the time of the purchase, my netbook was often exposed to students. Now, I am working at a different university and I need to prepare a PPP on my netbook! But... I can't open it! All I can remember is that my password contains "2012" and "happy" or "happiness", but I cannot open it! Please, please, please help me. I need it urgently. Thank you in anticipation.