Yes someone can help you. unfortunately not anyone on this forum... you need to contact hotmail support.
The only way we would be able to help you is tell you to check your caps lock button.... and maybe clear your temp internet files/cookies/cache.... and also make sure you are typing your password and not letting one of those password saving programs do it for you because it could have became corrupted......
Other than the above you need to contact the people that administer your hotmail account...