- You have a Windows 7 or Windows 8 PC with multi-touch capability.
- You have an external non-touch capable monitor attached to the system.
In this scenario, the touch screen events may be directed to the external display rather than the primary multi-touch enabled display.
Rebooting the system may correct the issue. If this does not correct the problem, use one of the below solutions.
- Right-click the desktop background and click "Screen resolution". Alternately
- Select the primary display.
- Check the box for "Make this my primary display".
- Select "OK".
- Navigate to the Windows 8 Start screen and search for "touch" under Settings.
- Select "Calibrate the screen for pen or touch input" .
- Select "Setup..." to the right of "Configure your pen and touch displays".
- Select "Touch Input...".
- Follow the instructions that are displayed on your screen.
For more information on the issue in Windows 7, click on the link below: