sometimes our parents or any one puts up an password on the user account we r unable to access our PC
nw we don't need to worry just follow these simple steps and you may open user account of your PC without the password
steps:
1.when your PC is starting start pressing F8
2.on your screen will appear a window in which there would be many options
3.the window will have: safe mode
safe mode with networking
safe mode with command prompt
and many more
4.just go to safe mode option and press enter
5.your window will start running in safe mode
6.your user account screen will appear which will have two accounts first one your own which is locked and the other named administrator just click on administrator and u will be able to access your PC
7.if u wnt to remove the password on the locked account u can go to cntl panel and remove it
this really works as i have experienced it too