Quicktime will not open on my Windows XP Profesional laptop

Everytime I try to launch Quicktime I get this error: Quicktime has encountered an error and needs to close
I have de-installed and re-installed Quicktime 7 at least three times and I keep getting the same error message.
Someone please help

I reinstall Quicktime and it would not launch and gave me the same error messages.
We'd better check to see if some other application has stashed old versions of QuickTime componentry down in your system files.
So we'll go looking for the older QuickTime componentry in the most common locations for it to be stashed.
First we'll need to change some view settings.
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, and Hide extensions for known file types is unchecked.
Click OK.
Now in Computer, open your C:\ drive (or whichever drive you have your operating system installed on).
Open the "Windows" folder.
If you have a 32-bit version of Windows, open the "System32" folder.
If you have a 64-bit version of Windows, open the "SysWOW64" folder.
What files and folders can you see in there with QuickTime in the title? (In a standard installation of Quicktime you should be seeing precisely two files ... QuickTime.qts and QuickTimeVR.qtx ... and no QuickTime folders whatsoever.)

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When I try to open it, the Quicktime icon appears at the bottom of the screen in the Windows 7 taskbar, but no window opens on the screen
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Quicktime will not open on my Windows XP Profesional laptop

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