You can start up without needing to enter a user name or password. Select Run… from the start menu and type ‘control userpasswords2′, which will open the user accounts application.
On the Users tab, clear the box for Users Must Enter A User Name And Password To Use This Computer, and click on OK. An Automatically Log On dialog box will appear; enter the user name and password for the account you want to use.

If you want your start menu speed is up, try this registry edit

Speed up your Start Menu

The Start Menu can be leisurely when it decides to appear, but you can speed things along by changing the registry entry HKEY_CURRENT_USER\Control Panel\Desktop\MenuShowDelay from the default 400 to something a little snappier. Like 0.