Event Viewer is another important diagnostic tool and one of the first to check because Windows often silently records useful information about problems with hardware and software in an Event Log. To check, open the Event Viewer, using one of these two methods:
• Press Windows Logo+X and select Event Viewer.
• At the Start screen, search for event, click Settings, and then click View Event Logs.
Start by selecting Custom Views, Administrative Events in the left pane. This provides a view of all significant management events from all of the various Windows events logs (and there are a lot of them!). Look for anything that might mention a networking error.
If nothing useful appears there, select Windows Logs, and then examine the System, ...