My Photoshop CS5 application is not working.

I have installed Photoshop CS5 for image editing. But when I try to open an image file using the Photoshop CS5 application, the image does not open. A look at the layers and filters of the image indicates everything is ok but still the image won’t appear on screen. As an attempt to deal with the problem I try closing the Photoshop CS5 application and then reopening. An error message informs me the Photoshop CS5 application is not working. Although the same problem of failing to show image on screen occur with illustrator, this works fine after closing and reopening unlike the Photoshop CS5 application. Someone please help me on how to deal with the problem.
