Based on what?

Here is my problem : EVERYtime I log in, I get this message that ''based upon suspisicious blabla , I need to restart my password. ''

Why?

I have a laptop that NEVER moves out of my house, SAME ROUTER, SAME INTERNET CONNEXION ( Anyway, there is none other available where I live.. ) and EVERYTIME I log on, I have to open email and change password... I gotten 13 email in the last week..

Is there a way to fix that?

Thank you.