Hello and welcome to justanswer. My name is***** will be assisting you today. I am sorry to hear that you are having such trouble.
What password ***** you want to change? Your login password ***** your pc?
Are you logged in now? and what operating system do u use? Win 7 or 8 or 10?
So you can still login to yahoo?
Yahoo will ask you to change your password ***** they pickup unusual activity on your account
You can check your activity here