Connect your second monitor. You may have to restart your computer so that it detects the new monitor.



After you connect your second monitor, you have to adjust your display settings.

In the New Display Detected dialog box, click the Display Settings link, to adjust your display settings.If you dont see this dialog box, click the Start button, and then click Control Panel. Click Appearance and Personalization, and then, under Personalization, click Adjust screen resolution.
In the Display Settings dialog box, click the monitor icon labeled 2, and then select the Extend the desktop onto this monitor check box.



3. If necessary, drag the monitor icons so that they are arranged in the same way as the monitors on your desk. Click the Identify Monitors button to verify which monitor is 1 and which monitor is 2.



4. Click Apply. Windows will activate your new monitor

5. Click OK.