I have a Bitcoin Core wallet. 4 days ago my password worked. Now I can't send bitcoins from my wallet: the password is wrong. What happened? Please help, all my money is there. I did not change the password phrase and I am sure I remember my password. How can I resolve my problem?
Try caps-lock ?
If you do not know your password it is very difficult. If you search there are other questions like this one discussing software to possibly recover the password.