Hey If None of these work i think i guessed wat is wrong...
Go to control pannel click user accounts...
On left pane find something like User account home (actually i m posting while working on Fedora so can't precisely tell you wat are the exact words but try to syncro)
On right pane you will get "Change the way users log on or off"
Do the following:
enable this option
Code:
1.To specify that users log on to the computer using the Welcome screen, select the Use the Welcome screen check box.
A user logs on to the computer by clicking his or her user account name on the Welcome screen. If a password is assigned to the account, the user is prompted to type it.
Uncheck this one
Code:
2.To specify that users log on to the computer without using the Welcome screen, clear the Use the Welcome screen check box.
The Welcome screen will no longer appear when you start the computer. To log on to the computer, type your user name (and password, if you have one) in the standard Log On to Windows dialog box.
And you are done...