Hi,
· Are you using Laptop or Desktop computer?
· What is the make and model of the computer?
· When exactly do you get this pop up message?
· Are you trying to shutdown the Monitor or computer?
· Were there any recent changes made on the computer prior to the issue?
Follow these methods and check if it helps.
Method 1:
Try adjusting the screen resolution and check if it helps:
Getting the best display on your monitor
http://windows.microsoft.com/en-US/windows7/Getting-the-best-display-on-your-monitor
Method 2:
I would also suggest you to download the latest Graphic card drivers from the manufacturer’s website and install it on your computer.
**http://windows.microsoft.com/en-US/windows7/Update-drivers-recommended-links**
Method 3:
If you are facing issue turning off the computer, then you can try performing Clean Boot and check if any third-party program is causing the issue.
How to troubleshoot a problem by performing a clean boot in Windows Vista or in Windows 7
**http://support.microsoft.com/kb/929135/en-us**
Note: Do not forget to boot your machine back to normal mode by following step 7 from the link.