Connect the screen to a computer running Windows 7 using the supplied USB cable and a cable for the video signal.
Ensure the cables are properly connected.
If the screen does not respond to touch, please visit our knowledge base article USB detection problems in Windows.
or you might use the system to restore to resolve the problem
You can use the System Configuration utility to perform a system restore. There are three possible restore points: System checkpoints that Windows schedules
Manual restore points that you specify with the System Configuration utility
Installation restore points that occur before you install a program or a service
you can use the system checkpoints or the installation restore points to restore your computer's settings to a date when it operated correctly.
This may also help determine the cause of the configuration error.
To perform a system restore, follow these steps:
1.Click Start, click Run, type msconfig, and then click OK.
2.On the General tab, click Launch System Restore.
3.Select Restore my computer to an earlier time, and then click Next.
4.Calendar dates in bold are possible restore points. Click the most recent one to view system restore information.
5.Select a system checkpoint or an installation restore point, and then click Next.
6.Close all other programs.
7.To start the system restore, click Next.
8.Your computer restarts. Repeat steps 1 through 8 until you fix your configuration issue.
hope this helps
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