You might receive a message that Security Log is full when you login into Windows 7 or other Windows OS.
To clear the security log do the following.
The following procedure applies to Windows 7 and Windows Vista
Login as an Administrator
Win ORB | Type: Management | From the list click on Computer Management | On the left side click Event Viewer | Windows Logs
Right click on Security and select Clear Log. You may save the current log if you wish, after your selection, the log will be cleared.
The following procedure applies to Windows XP
Login as an Administrator
Start | Settings | Control Panel | Administrative Tools | Computer Management | On the left side expand Event Viewer | Security
On the action menu Clear all Events, on prompt reply to No to clear the log.
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