Here are the steps

methods---------->
1.goto run type regedit press enter
2.open HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\SpecialAccounts\UserList .

3. In right side u see a list just add your account in this list for this right click on empty place select a new DWORD value and rename it to your account name.

thats all
now your account is not shown in logon screen just press ctrl+alt+del twice in logon screen a new window appears put here ur account name and password,press enter

in steps..

#[Start] [Run] [Regedit]
#Registry Key: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\WindowsNT\CurrentVersion\
Winlogon\SpecialAccounts\UserList
#Modify/Create the Value Data Type(s) and Value Name(s) as detailed below.
#Data Type: REG_DWORD [Dword Value] // Value Name: Type Name of Account to be Hidden
#Setting for Value Data: [0 = Account is Hidden / 1 = Enabled]
#Exit Registry and Reboot