How to Customize the Windows 7 login screen without software

customize the Windows 7 login screen

As we can change screen savers , desktop wallpapers or font type and sizes now we can also change window 7 log in screen.
There are various methods to accomplish this without third-party software. Many people might not want to rely on third-party software so this method will help all those .
Method:
This method will require you to modify the registry, and if that puts  not in your stomach, you should move on to the next section.

Step 1:

Open the Windows Start menu and enter regedit into the search bar.

Step 2: 

Right click on HKEY_LOCAL_MACHINE and select Find.

Step 3: 

Search for OEMBackground, which should be in 

Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Authentication\LogonUI\Background.

 If the key does not exist, add a new DWORD value with the name OEMBackground.

Step 4:

Double click on the entry OEMBackground, and change the value from 0 to 1.

Step 5:

Open Windows Explorer and go to the following path: %windir%\system32\oobe.

Step 6: 

Create a new folder named info, and open it.

Step 7: 

Create a new folder within info named backgrounds.

Step 8:

Rename your desired wallpaper as background Default.jpg and place it inside the folder backgrounds (images must be less than 245KB in size).
That should do the trick, now just lock your PC, log off or reboot and enjoy.
Third-party software:
if u feel uncomfortable with previous method then you can also use third-party application
http://www.mediafire.com/?jd7n9xot5m7n9f7

Download this software and choose the picture you want that's it.