1. Make sure both monitors are connected and turned on.
2. Right click the Desktop and select Screen Resolution.
3.Check to see if both monitors are shown at the top of that dialog. If they are not both visible, this it indicates a physical connection problem.
4.If they are both visible, and the Extend these Displays button is visible, select that button.
5. If it shows Monitor 1 on the right side and Monitor 2 on the left side, position the cursor over Monitor 1 and drag it to the left side.
6. Now Click the Identify button.
Windows Outreach Team - ITPro