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When I enter the windows password login, the system automatically logoff and is back to the Login Window again.
Solution:
The problem might be with userinit.exe not present under below two location
1. Check if userinit.exe file is present in %WinDir%\system32\ folder eg. C:\Windows\System32
2. Start the Windows registry. (you can refer to FAQ - How to start the windows registry editor?)
Go to
HKLM\Software\MicroSoft\WindowsNT\CurrentVersion\Winlogon
On right side pane check for the entry and it should be present as given below:
Userinit = C:\WINDOWS\system32\userinit.exe,
Note: a comma should be present after the command line c:\Windows\system32\userinit.exe
Note: You can check these by using some Bootable cd such as BARTPE/ERD Commander, if you are not able to check normally with windows.
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