HOW TO REMOVE SAVED LOGS IN THE EVENT VIEWER

1. Open command prompt “CMD” with “Run as administrator”.

2. Run the following command as below and press enter to proceed.

del /s /q %programdata%\microsoft\eventv~1\extern~1

3. You will see the saved logs deleted.

Deleted file - C:\ProgramData\microsoft\eventv~1\extern~1\Log_0.xml

Deleted file - C:\ProgramData\microsoft\eventv~1\extern~1\Log_1.xml

Deleted file - C:\ProgramData\microsoft\eventv~1\extern~1\Log_10.xml

…….

4. Done.

More details may refer to http://support.microsoft.com/kb/2489761