Remove the extra boot menu after installing Windows 7

Recently I installed Windows 7, is installed over the cover, did not format the C drive, the installer prompts to keep the original system as a folder, but can not log in to the original system! I put that file The folder was deleted and the hard disk space was released. But now every time the system login interface must choose the system to enter, one is Windows 7, one is the original system. How to remove the boot menu and go directly to Windows 7?
There are two ways to solve this problem. They are graphical interface methods and command line methods.
Graphic interface method: Click “Start →Run”, enter msconfig and make sure that the boot menu option can be modified in the Boot tab.
Command line method: Use the “admin mode"run" command prompt", use the bcdedit command to modify the name of the Windows 7 menu item: bcdedit /set {default} description “Windows 7”.