After installing Postgres SQL, there was a new user in the Win7 and it was annoying! It showed up everytime I wanted to log in, and hell why would I wanna log in as a database account?
To get rid of it, run command prompt as Administrator and paste in:
REG ADD "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\SpecialAccounts\UserList" /v postgres /d 0 /t REG_DWORD /f
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