This may be getting off topic, but when I use the F11 key to get the full image size I will lose my toolbar if I'm online. The full image truncates the image by over filling the screen. I do agree with you that a file or files may be corrupted, this why I had wanted to see what would happen.
I also agree that a screen shot would help a great deal, for this reason I've posted instructions on how to accomplish this.
2. Follow the wizard to capture a screenshot
3. Use the built-in editor to resize, edit, or re-capture your screen shot.
4. Your screen shot will be saved to your desktop when you finish the wizard.
You can post the screenshot in your next post as an attachment.
Just below the area where you write text in a post there is the Post button, to the right of this is More Reply Options.
When you click on More Relpy Options you will see Attach Files and Browse, click on Browse, this will open Pictures on your computer, click on the image you made with the, then click on Attach This File, then Add Reply.