Windows 8.1 boot automatically connect to broadband

Symptom:
In Windows 8.1, "Internet Options---Connection" has removed the option to set the default value (E)”.
Solution:
1. Create a new text file and enter the following content:
rasdial "Broadband Connection" Account Password
Change "Account, Password" to your broadband account, Password, saved as cmd or bat file.
2. Create a new text file and enter the following:
createobject("wscript.shell").run"rasdial broadband connection account password", replace "account, password" with your broadband account , password, saved as a vbs file.
3. Put these two files into the startup folder. Path C: User User Name AppDataRoamingMicrosoft Windows "Start" menu program starts
Because the cmd file is run, the command line window will flash after booting into the desktop.