I recently locked my keyboard by using the Windows button + L. ***CAUTION*** Before you do this read on. I then seen a window pop-up that read 'system is locked' please enter username and password' and gave me two text fields to enter my information. I tried password after password and still produced no results. At this point, I was thinking "oh crap" I'm locked out of my own CPU. So, I forced a shutdown by holding the power button on my tower. The computer restarted normally, and I then Clicked Start> Control Panel>User Accounts There is shows my two accounts. I have an Administrator account which reads "Password protected". I Clicked Admininstrator> Change my password I am then asked for my current password. (I didn't know I even set one up) I tried multiple passwords and even read the help menu. The help menu told me to use the password hint feature, When I click Password hint, nothing happens. Then I came straight to the people who I know will help me. The friendly folks at the TechSpot forums.