Increasing Event Log Size
Open up Event Viewer by typing in eventvwr into the Start \ Run box, or you can find it under Administrative tools section of Control Panel.
You’ll notice over on the right-hand side of the window that the current size of my Application and System Event Logs are 512 KB…
Now you can right-click on one of the Event Logs in the list, and choose Properties from the menu.
In this dialog you can do a number of things… you could clear the log, increase the size, or just set the system to overwrite events as needed.
I chose to increase the maximum size of the event log, and then also to overwrite events as needed(这项根据需要选择，下同）.
For those of you using Windows Vista, you’ll notice that the default settings in Vista are to overwrite as needed, and the maximum size is way bigger. Guess my setting choices make sense then…
Again, if your Application or System event logs are growing so gigantic that you are getting this error, you should really look into the root cause by carefully examining the entries in the logs.