Change Windows Logon Screen Background

C:WindowsSystem32oobeINFOBACKGROUNDSBACKGROUNDDEFAULT.JPG

File must be JPG and smaller than 256kb.

HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrent VersionAuthenticationLogonUIBackground

OEMBackground value: 1

Tested on Windows 7

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