If you have administrative privileges and work or play in a single user environment, you can speed up the booting process by automating the way your operating system handles the password dialog box, bypassing the mandatory 'Ctrl+Alt+Delete' login prompt. Open the Registry and look for this string:
Right-click on 'AutoAdminLogon' and select 'Modify' and change the value to 1. Now right-click on 'AutoLogonCount' and select 'Modify' and change the value to 1. Now right-click on 'DefaultUserName' and select 'Modify' and change the text to your Username. Now right-click on 'DefaultPassword' and select 'Modify' and choose a password. Close the Registry and reboot your system.