My name is ***** ***** certified computer professional with over 10 years experience.
I will be glad to assist you with this.
I am sorry to hear that you are having this issue.
What is currently on the lock screen of the conputer?
Does it have an email address or just an icon with user name?
Okay, this sounds like you will have a couple of options to get it working again. If you need to save your personal files and data that is stored on the computer you will need to have a password ***** disc.
Do you have a password ***** disc?
Is the computer Windows 7 operating system?
What is the brand/model of the computer?
do you still need help?