A QuickTime display preference may have blown up for you.
If that's what is afoot, rebuilding the QuickTime preferences can help, although it can be a bit of a trial to track them down on the 64-bit systems.
Close any of the QuickTime Player buttons that are currently in your taskbar.
Now we need to change some view settings on the PC. (The preferences are kept in hidden folders.)
In your Start menu, open Computer.
In your Organise menu, select Folder Options.
In the View tab, make sure that "Show hidden files and folders" is selected.
Click OK.
Next we'll navigate to your AppData folder.
In Computer, open Local Disk C:\ or whichever drive your user documents are stored on.
Open the "Users" folder.
Open the folder with the name of the Windows User account in which the QuickTime Player isn't displaying properly.
Open the "AppData" folder.
Now the hunt for the QuickTime preferences begins.
Open the "Roaming" folder.
Open the "Apple Computer" folder.
Do you see a "QuickTime" folder in there? If so, drag that out onto the Desktop. Now try launching the QuickTime Player.
If there was no QuickTime folder in \Roaming\Apple Computer\, or if the QuickTime Player still isn't displaying properly
Quit any QuickTime player buttons in the Taskbar.
Go back into the "AppData" folder.
Open the "Local" folder.
Open the "Apple Computer" folder.
Do you see a "QuickTime" folder in there? If so, drag that out onto the Desktop. Now try launching the QuickTime Player.
If there was no QuickTime folder in \Local\Apple Computer\, or if the QuickTime Player still isn't displaying properly
Quit any QuickTime player buttons in the Taskbar.
Go back into the "AppData" folder.
Open the "LocalLow" folder.
Open the "Apple Computer" folder.
Do you see a "QuickTime" folder in there? If so, drag that out onto the Desktop. Now try launching the QuickTime Player.
Any of those measures help with the display problem?
