Wrong Driver installed.
I think you have got the wrong driver on your pen tablet. Though this can be informed to you as a update from the windows but as you are using the windows 7 on it. It would not be supporting the particular driver. Try to install the proper driver from the professional website of the pen tablets. Make sure that you uninstall the current driver completely before installing the new one as this may cause in improper installation of the new driver.
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