If you have only one user on your Windows machine and do not want to type in your password at startup or you do not use a password at all, you can add the following to your registry so the startup is a little bit faster.
Copy and paste this into a textfile and name it autologin.reg (make sure it is not named autologin.reg.txt or something else)
If you are not in a domain or do not use a password you can ommit the lines with these options.
Windows Registry Editor Version 5.00 [HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindows NTCurrentVersionWinlogon] "DefaultUserName"="User" "DefaultPassword"="Password" "DefaultDomainName"="Domain" "ShowLogonOptions"=dword:00000000 "AutoAdminLogon"="1"