Weed Caused Memory Loss?

So at start of this month my computer stopped working.

I went on vacations to Prague, and I had very easy access to weed, so I smoked almost everyday. (most of black guys, which looks like rappers from 2012 in USA, selling drugs here, literally :P)

It was quite cool to explore this beautiful city on high btw.

After 10 days I went back to my city. Everything was again... normal? I've been with friends outside, casual drinking etc.. Maybe 2 times i did more than 8 beers, which were terrible experiences, if I look at the next day.

To the point, today i've repaired my computer.. BAM! Login screen.. I wrote my password, And.. it doesn't work? No way! i kept trying again... (and wasted like 15 minutes writing every single possible password) I have this PC for fucking 3 years and I forget my password?

I don't know how the fuck is that possible, I had access to weed and now i have no access to my own PC...

tl;dr: Forget password.