How to Repair Gina.dll

1. Open the Run box by pressing 'Start' and 'R' at the same time.
2. Type 'regedit' into the text field and click 'Run.'
3. Navigate to the following value and delete it:HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\GinaDLLDoing this will force Windows to replace the missing file with the original, unedited file.