Find information on error codes from the 'Event Viewer'

You can access the Event Viewer from the Administrative Tools section of the Control Panel.

To locate additional information on a particular error in the Event Viewer, you will need to locate the Error Source and the ID. You will find both of these values in the list of events...

One you have found the Source and ID, the following link can be used to find additional information on the specific event or error...
http://www.microsoft.com/technet/support/eventserrors.mspx (http://www.microsoft.com/technet/support/eventserrors.mspx)