How to restore Passwords after crash

Windows 10 crashed on me. I had to repair it, but lost all installed apps. First thing I install is avast, but the password manager is empty. What am I doing wrong? Where are my passwords? Does password manager save our passwords somewhere? help

I have almost exactly the same question. Windows 7 crashed and I installed Windows 10. I have installed Avast and logged in to my account but password manager does not give option to login using master password. There is no indication that I have existing passwords stored somewhere in Avast.