long story short. someone thougt they would do a funny but they really managed to change the password :/
Lesson learned: don't let anyone touch your computer. If you really don't have the seed words, you were just waiting for the moment your hard drive failed to lose your wallet. Maybe you can recover an older version from your disk using recovery software.
I had the erlier password in keepass but i tried recovering keepass files but they are corrupted. is it possible to recover old keepass files and open them ? :/