Bruno, you have posted in the Photoshop Windows forum, but your question pertains to a different software package, Photoshop Elements. You would be better off in the Elements forum, here <
http://www.adobeforums.com/cgi-bin/webx/.eeb4f8b/>. Also, it is not polite to hijack another person’s help request with your own, unrelated request — and this is unlikely to get you much assistance. You really should review existing posts in the appropriate forum and then, if you don’t find a solution, either jump into an existing topic that is related to your issue or create a new topic.
That being said, you are attempting to use an older version of Elements in a very new OS, which may not fully support your program. Also, you may need to update your Wacom driver and your video driver.