|Try forgot my password option. If this is the only account. Try booting to safe mode by pressing F8 while booting > Select Safe mode > Usually there are 2 users One is the account which locked out and the other is an Admin account. If you have not changed the password for the Admin account then the default password is "admin" small case|
Try logging in to the account create a new user and start using it till you remember the password for the locked account. This new account will give access to most of the information saved in your hard drive other than your documents or pictures stored personally. Everything else in D drive or other drivers are fully accessible.
(Use This procedure only when there's no user account other than the one that's locked out)
Let me know if this helped. Else reply back to this post. Thanks.