samayam

Go through Start → Run → Gpedit.msc
Computer Configuration\Windows Settings\Security Settings\Local Policies\Security Options
Description
Determines whether the name of the last user to logon to the computer is displayed in the Windows logon screen
If this policy is enabled, the name of the last user to successfully logon is not displayed in the Log On to Windows dialog box.
If [...]

To create a log file using Notepad:
1. Click Start, point to Programs, point to Accessories, and then click Notepad.
2. Type .LOG on the first line, and then press ENTER to move to the next line.
3. On the File menu, click Save As, type a descriptive name for your file in the File name box, and then click OK. When [...]