Perhaps you have a dialog box opening off screen?
What happens if you press the Esc key on your keyboard?
Are you able to use the Image menu then?
Nope. It's only the Image meny. The others I can get access to.
Can you post a screenshot of the whole photoshop application?
- Did you actually open an image first? As the Image panel will be greyed out until you open an image.
- Open any image and retry.
- Does that happen only with Image menu or other menus as well?
- If you get this even after opening an image, then would suggest you to restart the machine and retry.
- Also, what type of file did you open here?
- Is it 8, 16 or 32 bit file?
Attach a screenshot of complete PS as suggested by R_Kelly, for further help.
I restarted the machine and that did the trick.