Should I try uninstalling it then try again with installing it? How do I do this if this is the case?
Update your graphics driver or turn off hardware acceleration in the preferences.
[Moved to Photoshop forum.]
Do yourself a favor learn to do searches before asking a question you will find your answer faster that way. There are many tutorials on the web on the subject of extracting. Generally masking is the best approach. You destroy nothing and you mask can always be worked on and made better. Please do a search its a popular subject.